the Nova sorc is already the #1 sorc build with end-game gear (and the (chain) L used to be before that). Why do you wanna weaken all other sorc builds relative to it?
And other classes would get nerfed relative to sorcs as well. Sorc is already a very popular (starting) class, this would make things worse.
You should try to balance stuff, not make things worse.
you are right actually, I would rather weaken the sorceress as a whole, but especially the effectiveness of enigma.
Lets revise the skill to only include HARD points (meaning a max of 20) and every other level reduces the frames by 1
so starting cast-rate is 19 frames (for enigma users before FCR)
A sorceress with 2 points into teleport gets a cast-rate of 18 frames (before fcr)
A sorceress with 12 points into teleport gets a cast-rate of 13 frames (before fcr) The same as it currently is, except you have 12 less points to spend elsewhere.
A sorceress with 20 points into teleport gets a cast-rate of 9 frames (before fcr)
Lastly teleports mana cost would just be a flat 12 regardless of level, which makes her more prone to stun-lock when mana shield is used. (if you donāt have mana you cant teleport away)
This could be paired with a buff to fire mastery (each level of fire mastery also adds +1 fire resistance) and a buff to cold-mastery (each level of cold mastery also adds +1 cold resistance) If needed to further buff the non-lightning builds.
(personally im not a fan of lightnings variable damage, because even at a level 50 lightning you arent guaranteed to kill a fallen, though maybe nova itself bypasses this, and maybe needs 1-x damage like the rest of the lightning skills with a buff to max damage until average damage is the same.
Not really. I mean I can infer, I can guess, but to say itās obviousā¦nope. That would require me to assume, and you know what they say about people who assumeā¦
Some people can only be literalā¦ Literally.
Or maybe you could just play not using it.
Youāll never get to the top either way with these d*mn bots. Lol
You could, And sometimes I do just because youāre right and for normal people, thereās no rush/race. I think the main point that was being made was having everyone play without using teleport. As in, the choice is made for players. At least for those who would want such an experience. I know I would, it could really freshen up the game and season experience.
I mean considering I already end up running points in energy + insight + sometimes even frostburns or mana charms while doing early farming just because I hate dealing with TP mana costs, I wouldnāt touch that with a 2 foot pole. 
The point is to slow teleporting down. You can still move decently fast teleporting once every couple of seconds without accruing any āteleport fatigueā. Plus youād still be able to quickly teleport a few times if needed.
Iām not surprised by your response though. Too long has the community, and cough botters cough been accustomed to unbalanced carefree rapid teleporting in the game. And thatās coming from someone who regularly plays sorc.
I understand being blinded by nostalgia. I was too at release of D2R but when it faded away I realised there are a lot of serious balance issues in game like Teleport, Melee, Runewords being too op making Uniques useless.
I mean to be fair itās the primary reason I play d2 over other ARPGs so itās a touchy subject for me. If it wasnāt for teleport Iām not sure if D2 would have stuck with me for the last 10-15 years or so and Iām likely have moved to a different game entirely.
As much as I like doing weird challenge builds from time to time, I can just self enforce those rules on myself.
I can tell you what a nerfed teleport season looks like. Everyone running Chaos/Trav/Arachnidās Lair/Pindle/Eldritch-Shenk til 90 then only playing when the current TZ isnāt annoying for walking.
It would be even worse now because youād just have mosaic running around with burst of speed/hustle slaughtering everything. With some charging paladins mixed in.
Sorcās are fast at getting through the game, but frankly, before infinity they honestly kind of suck.
Well, the good news is that you donāt have to worry about any balancing coming to teleport, or to any of the other class skills. We can theorycraft all day long about what would be good for the gameā¦ But as Iāve said numerous times, this is a Remaster. 
True enough. Iām currently just running through in SP with a Holy Shock/FoH Pally and honestlyā¦ kinda a fun/chill time.
Kinda bonkers strong for an 88 point investment.
There were already balance patches in D2R so that theory is wrong long time ago. Recently Blizzard likes to release unexpected patches so anything is possible.
Running a Light trap/Shadow Master Assassin. Slow at times especially in Hell. A lot of restarting to try and get non-LI guest monsters just to push through questingā¦ But Iām getting there. In A4 now.
Shadow Master is at lvl 21, she tanked Mephisto and Duriel pretty well. Works very well as a decoy to zip through areas full of light immunes.
Honest with just a sunder and a Crescent Moon I think it would be fine. These days I stop in NM TZ til 78-80 and grab my sunder/levels. Takes like 2-5 hours tops.
I feel like every character I derp around on these days starts with a Treachery/Smoke (or a swap into the other for non assassins and just farming a sunder. 
Then using one of the 3 derp helms.
Sometimes a Hustle chest if the build does not have built in movement speed like pally/assassin.
Those new helms and hustle are just busted strong in NM.
Yeah, like season 7ās notes:
Patch notes:
End of line.
Season 10. Toggle ladder exclusives to nonladder.
No runes.
Hilarity ensues.
Or quest runes only. I donāt care.
Well I had updates for other games in mind like Warcraft 3 Reforged or Heroes of the Storm that people also thought are dead and wonāt recieve anything.
Okay, but what about StarCraft Remastered? Abandoned since 2020.
Weāll see whether D2R gets some surprise patches in the future like WC3R/HotS or follows SCR into the grave. I expect nothing but the latter, but who knows.
Maybe something next year for D2ās 25 year anniversary or in 2 years when Diabloās 30 year anniversary rolls around but I still wouldnāt expect anything, maybe a congratulatory post from the Diablo X account if weāre āluckyā. 
Regardless, the people will (and already are) taking it into their own hands with pservers and TCP version, theyāll update the game themselves.
Teleport is an integral part of d2 gameplay. Itās literally a core element of the game, and enigma makes that true for all classes. Is teleport broken? Of course it is, but d2 without teleport is far bleaker than youāre imagining. You will watch build options for farming shrink to nothing as they fall further into niches. So to address all of your points:
Party play already exists. The determining factor for party play is literally whether or not a player wants to party or solo farm.
Players already do this constantly while farming and leveling.
You have far less viable builds when everyone has to walk everywhere. It will become a landscape of skills that allow builds to pass through enemies, and there arenāt many of them.
Botting will exist regardless.
Run/walk speed is already favored on all builds. You will never make stamina relevant.
Dueling is already the most diverse accumulation of builds and itās not struggling because of teleport.
If you really want to improve the next season, outright remove Mosaic.