I believe that the universal ability to disengage as a bonus action does in fact depower rogues until rogues get a 2nd bonus action, at which point they get a huge buff in comparison. So to me, that's almost a wash.
The way sneak attacks currently function is in fact somewhat tedious and strange. I heavily suggest that sneak attacks automatically be applied to any target which is threatened, or for which the rogue has advantage to hit, capped at 1 per turn. This is obviously the way they work in 5e, and would vastly improve the fun of playing a rogue in this video game. I very much don't like that sneak attacks don't work with my offhand, and I dislike needing to use a special attack in order to sneak attack.
Honestly I think a big and easy step in the right direction would be making it so that only certain disadvantages negate sneak attack vulnerability. Sneak attacking at range without darkvision (or Drow's super darkvision) is a massive chore in a lot of indoor areas because everywhere is so dark you'd think it's the shadow plane. At least when sneak attacking in melee the main hurdle can be resolved by jumping.
