easy things for me:
Arena
Summoning Stones (seriously it’s not ‘hard’ its just tedious)
the ability to magnify points of interest on your map (IE show me mailboxes, flight master) - again, this isn’t hard knowledge, just tedious, i jsut google it half the time anyways.
If you’re not going to read the OP why particpate? troll somewhere else
i don’t really want to press this but your not adding the the value of this thread.
LFG was on the devs minds, but did’nt get added until BC.
look up wowwiki dungeon finder.
Scroll allll the way down to History and you will see that the looking for group channel was zone locked (no changes)
Originally it was just a group finder, no rewards.
I feel like people like this assume OP means cross realm group finder (which maybe he does), but there’s also the mythic + and raid (not LFR) group finder which is to post a group, and people can request to join. It’s not automatic teleport bull, but essentially a way to post your chat spam into a window. because right now instead, we have chat spam.
but keep being a troll, w/e.
OK!
Carry on. I’m sure this will go places … LMAO!
Perhaps a loot mode where the individual can chose transmog loot. Any gear drops become bop only for the purpose of transmog?
Just intentionally derailing thread, guys like this are just giant periods 
Sure. Then they just steal loot from others.
“Sorry man. Im needing that for my xmog set”.
No thanks.
or you could jsut you know mouse over them… plus i can tel lteh difference between most classes with transmog anyways >.> maybe sometimes get confused between a priest and a mage? but super rare.
Different spells, different tier sets, etc
Well it would have to be approved by the group leader and all involved. I think it would work well.
And i think it wouldn’t. Leader would have ultimate say and it would lead to drama.
Furthermore, transmog wasnt in vanilla.
Nah that’s a warlocks job. Also, nothing, these topics are pointless.
The thread is title What would you put in classic from modern wow.
Indeed. We all know Group Finder threads will end with exactly what everyone wants, lol!
Are you all just completely stupid or partially so? This entire thread is pointless …
Jewelcrafting.
Transmog collection.
Barbershop.
Updated models.
Achievements.
Pet and mount journal.
Gem slots, preferably the BC version. (No RNG + socket colors and bonuses.)
Not even in BfA yet but level sync.
Yep. And im here to make sure you understand your idea has far reaching consequences.
maybe one that just helped to find/form groups but did nothing else could be ok - help to categorise the group listings so you can easily find dungeon or quest or custom groups. and it would reduce the chat spam
barber shop and aoe looting.
Level scaling 
No but seriously, the option to turn on the HD models from when WoD came out would be nice. Use the same functionality that was originally there for swapping to the SD models when they came out in Retail. Default would always be the SD models from vanilla, but if players so wanted to, they could go into their graphics options and toggle the HD models on.
I liked the pet’s panel, to be honest. Along with this, I also liked that quest items went into an invisible inventory.
it feels like Jewelcrafting from bC and Wrath inscription would’ve fit in perfectly with this game.