Quote Originally Posted by Elexia View Post
In every MMO I've played (Including new ones) people prefer leveling via quests than mob grinding unless the specific MMO is designed in a way you can only level reliably through mob grinding (usually in instanced dungeons.)

So no I've never seen a proper balance between the two because even if it exists, players will choose one route over the other, just like in XIV currently players choose job stacking over varied setups even though both work just fine.
Probably because grinding is boring and outdated.