That's some cool suggestions.
I remember BG stealth, but the surprise mechanic is new and the Assassin class is built around it in 5e, and 5e made them pretty badass. In fact Assassin multiclass is capable of the highest single target damage in the game.
I think I have never used stealth in DAO because even being a Rogue/Assassin main, most rpgs make rogues underpowered, and therefore I never created a Rogue PC or used the companions.
Rogues are specially sucky in PoE.
