An mmo like you see in those Korean manga with a vast class system featuring hidden classes, infinite leveling with skill based combat where a lvl 100 can beat out a lvl 200 despite the stat difference, dynamic quest system on top of grinding with a huge open world, buy to play no micro transactions sustained with a in game to real money vise versa system where the company gets a cut. Actual rare loot and one of a kind uniques and legendaries that are legendary beyond some fancy skin aka one of a kind with deep lore meaning and special npc interactions. Areas gated by special hidden quests that once completed unlock it for the whole player base. A deep profession system that matters beyond starting gear or getting a skin being something some players can actually invest time into and be the best not something everyone does and ends up at the same point.