>>1632030
>I'm blocked from every quest requiring an 8 people group to do
Wot? There are quests that require 8 people except emotes? Max I know of is 5 for some alignment quests.
>Farming mobs seem pointless with the xp required for lvl 200 being 2 billions
It is. The only thing waiting for you at level 200 is further optimization as you figured. You can clear the whole game at level 199 anyway (just can't get lvl 200 achievements rewards). If you want to PvP you should consider not leveling also, the meta shifts dramatically from 199 to 200. It is way more tank oriented at lvl 200, fights are way longer and the optimization required is far higher (with some exceptions depending on the class).
The endgame of Dofus is getting rich and gear up for PvP. If you are not interested in either then yes, you will run out of content or purpose.