On the topic of the title: I conceptually like how Soulbound have integrated players making quests. As a downtime activity (or “endeavour”) a player can choose to “investigate a nemesis”, meaning that the player gets to work with the GM to make a new villain for the story, and in return they get a bit of extra xp when the villain is defeated.
However, I haven’t actually seen this option be used (nor have I really played enough for there to be many options to), so I’m not certain how it would shake out in play.
As far as I’ve gathered Valve “accidentally” created the elf tag instead when the dwarf tag campaign happened. When someone noticed they went “oh, whoopsie, hehe” and added the dwarf tag too. So elf should also be a tag now.