Bring us a brand "new" (existing for ages in other projects) quest-log like this:

Also, there's some issues with quests, that prevent modders to make it if you have no time, like this:
Ardennes
but that's how I know that its fucking painful
you can't even abandon a quest that isn't your actively selected one
because to the client it doesnt even exist
so even a small improvements would be grateful.
We want to play your game, not clicking along 100000 quests to understand what they want from us...