I haven't played classic in awhile but I thought I'd come on here and talk out of my ass.
Does classic currently have any sort of quest/dungeon that you can play multiple times for the potential of different loot?
(((((((((((I've been playing destiny 2 and loot just seems to make sense here))))))))))))  

So. A quest or dungeon that you can play over and over for different loot.... in terms of classic. Nope. No such thing unless you count bandit cave. Now, Zone had a missions center for different things to which you can get different minerals and Graaliums. But ....generally not really.especially nothing in classic unless you count the bandit cave that has the daily loot  

Used to be fun to kill the bats in the caves, since they respawned every few minutes. You would sometimes find a bomb rat, or a super bat which both dropped golden gralats. Felt like a dungeon, but now they respawn in seconds.

If you want loot, you're better off waiting for iDelteria, and who knows when that will arrive.