any and all of ffxi's endgames were great, stuff like that with this games features would be great, hnm's maybe with low drop rates but they pop quick like the nm's we have now, all the mobs in area of it maybe can be farmed for items that help improve drop rate.

any and all full linkshell events in ffxi, missions like in ffxi, i want my cop type quests, nothing easy and solo like we have now (this is soo hugely important, factor of stay or leave = missions)

besiege and campaign battle type stuff would be great, side quests that acually have mini bosses in them. big huge battles from the past wars threw our powers(maybe dynamisis like)

some form of pvp, also some for of scenario or battle grounds, doesn't have to be pvp format, pve or pvpve type that we can click to join and auto group ...enjoy for 20mins and come right back out of it to go back to doing whatever.

more dynamic mobs in general, i want to dispell mobs again, want to unparalyze, and slow more often, even in grinding. all mobs and bosses need to have more of this.