We’d try to do what the dev team promised and then failed to deliver: team-based arena-style pvp. And if that proves too difficult, I’d at least mod the free for all PVP with any one of the single changes mentioned years ago to help make it more balanced.
If possible, I would make a mod that prevents all modding from happening.
Modding is cancer. It turns good games into garbage. Unless we are talking about something like Bethesda games, which basically have no game initially and release as a modding kit so that the community can put an actual game in there.
I wouldn’t. Certainly not without official mod tools like Warcraft 3’s map editor.
But if it were officially supported? …I’m with Bovie. Hell, I’d go a step further and try to make the entirety of Sanctuary for Adventure Mode so you can free-roam at your leisure and just explore.
…But that kind of gameplay doesn’t lend itself to what Diablo 3 is, either, so… no, I don’t think I’d mod Diablo 3.
Wow, you must be fun at parties.
Modding is not cancer; it is actually the only thing that keeps GOOD games alive and relevant no matter what their age.
As a matter of fact I am.
Having an opinion that you disagree with doesn’t make me automatically not-fun at parties.
sounds like Doom. Might aswell add the BFG as a Two-Handed Weapon. 
Nothing is ever technically beyond hypothetical
you know installing mods is competly optional?
It would be cool if you can use all the followers and they could use the special gems so you can have this team with you all the time. It kind of sucks that I only use Templar.
Fix bugs and ban cheaters.
Modding in general is a bit dividing subject. For some games it suits perfectly like for TES and Fallout series but those are also purely singleplayer too. For singleplayer games modding can be extremely beneficial, keeping games fresh and updated. In singleplayer games you can personalize the experience for you and for you alone.
However D3 is essentially an online multiplayer game. While one can play 100% solo, modding can still affect other players, directly or indirectly. I’m not so sure allowing modding D3 would be wise.
Modding requires internet, so you can’t play mods because you hate having required internet.
- not every time. Look at WoW and tell me that raiding Mythic without mods is a valid oprion. Or tell me that the game wasn’t twisted a lot because of developers compensating for existence of mods.
- it is enough that the damage is caused to someone else other than me. It’s not like I care about THEM having a bad experience - rather, I care that any amount of players having bad experience poorly reflects on the developer, a game as a whole and possible sequel or other projects of that studio.
- Mod support makes the developer lazy. Because people end up doing their job for them.
Mod support CAN be good. In a sandbox game like Minecraft.
But any serious game only loses out by allowing mods.
Unfortunately this is a rather valid point. All one needs to do is look at the state of Skyrim and how buggy it is. Using the unofficial patch is pretty much mandatory to avoid some game breaking bugs.
Then there’s the infamous case of Fallout 76, it inherited numerous bugs from Fallout 4 which the community fixed ages ago through mods yet got transferred as they are to F76 and Bethesda couldn’t fix them. F76 has no mod support (and never will without certain key changes/additions) so community fixes are out of question.
edit:
In general I’m in favor of having modding support in games but I also try to see what potential negative aspects it could bring with it.
Mod to delete paragon and all the sets
Better more detailed character models, more options to customize your characters appearances, hair color, face, body type, ect. More armors clothing for more customize appearances. A mode where you could pit your 3 followers against other players followers online. More pvp modes. An occasional Free season where you dont have start a new character from scratch to participate for those who dont like starting from fresh.
First thing I’d do is remove the god awful user interface and make my own, very minimalistic.
Level 99 cap. No paragons. Getting from 87 to 99 will take a very very long time, just like D2 classic.
Skills will be rolled dice damage instead of % weapon and toned wayyyyy down. The most damage we should be visually seeing should be in the thousands not billions. (This one should be given)
Only about 5 difficulties should exist. Normal to inferno and scaled appropriately. More people would waste less time knowing that a difficulty isn’t doable from the first few mobs. (It’s okay dying because of difficulty, people)
Make more harsh death penalties. Losing experience was harsh back in d2 but it’s something I wouldn’t mind. Definitely keeps you on your feet. Right now it’s literally a slap on the wrists with a 50000 gold repair bill when we get like millions per rift run.
we had/ have bad experience with D3 because it lacks content. D3 had the potential to sell more than one expansion. if it didn’t suck at the beginning - alienating the fanbase.
imho, mod support in d3 would have been beneficial.
but, from the amount of content we got, we could say, they are lazy. or probably to busy with other blizz stuff. in this case, D3 devs probably would have felt relieved if modding was a thing.
You? Maybe.
You can never please everyone.
But hundreds of thousands of players play each season to this day. And they are not bothered by the “lack of content”, because breadth of content in Diablo games was always secondary to the base gameplay.
One can’t really say that D3 has little content. It has A LOT of variety where monsters, classes and maps are concerned. And Rift system uses 99% of that content, constantly giving you varied experience.
You don’t like it - fine. It’s your problem, really. Diablo is not a game for you, then - that’s all there is to it.
Also, I DARE you to say that D2 had more content thanks to mods. Even with all mods combined, D2 had several times less content (because 90% of it were useless in the endgame)
Haters gonna hate, I guess.
Diablo 3 is without a doubt the most cost-efficient game in my collection. The amount of hours of pure undiluted entertainment that I got for my 140 dollars (bought everything incl Necro on release) is insanely high.
I personally am totally and completely OK with Blizzard not wasting time on further expansions and making a new game instead.
Not every game needs a constant flow of new content. Some games are good because their systems make the content they already have highly replayable - and that’s exactly the case with D3.
If you want expansions, story updates, new quests and zones in DIablo… I gotta say, sorry, but you completely miss the point of this game and what makes it good. That’s okay. As I was saying, no one can please everyone.
But I don’t suggest that you hold your breath for D4 being ANY different in that regard.
Mod support in D4 is less likely than Offline game mode, to be honest. Mainly because mod support is almost certainly contingent on your ability to make an offline game, because servers would not know how to handle your mod. And that one is already less than 1% likely due to DRM needs.
I’d rather have custom map, or map editor and have an Arcade mode similar to Starcraft 2 where players can get to play user-generated maps, and have a ranking on each map. That’ll make the game a lot more alive.