One thing I remember disliking about dnd 5 is that it made it hard to play characters who LOOKED like one thing and ACTED like another. The game creates strong expectations for how classes look and act. Or at least i had a difficult time
Take for example:
A merchant caravan leader, who carries a sword and postures as though he's a brave fighter and a wise businessman, but actually relies on underhanded tricks and sneak attacks when fighting, forges documents, etc... the appearance of an upstanding person, with the reality of a person who will lie, cheat, and steal anything if he thinks he can get away with it.
Even removing most of the character stuff, 'talks like a fighter and walks like a fighter but FIGHTS like a cowardly fuckin backstabber' mechanically seemed to demand weird multiclass bullshit which takes a long time to set up or required deliberately playing way less than effectively.
I would refer to my books to back this up, but I gave them all away when I decided I wasn't supporting WOTC in any shit anymore, so I could be misremembering
It's easy to do in other system though