Honestly, it feels like the stuff that's going away in this version are mostly things that weren't intended to be there in the first place. Take the whole "Sneak Attack once per Turn" thing. Yes, this means that to really maximize your Sneak Attack damage you want to be attacking on your opponents turns as much as possible, which leads you to stuff like three level dips into Fighter for Riposte or using Haste and only attacking with your Haste action so you can use your other one to Delay until someone else's turn. Everyone who's played with a player who's trying to optimize a Rogue has seen this stuff, but they've almost certainly also seen a new player who's completely mystified by the hoops someone is jumping through to make this happen. Maybe instead of leaving this loophole that many players will never find, they could set the power level of the Rogue's Sneak Attack damage at a point where it does the expected amount of damage without requiring these sort of hoops to be jumped through?