So basically you want to take Rogues main attacking style away and leave him with nothing but regular attack. Rogues don't even get second attack at 5th level. Damn, that's cold, I'd hate be a rogue!
In every game there are ways to "cheat" and make the game easy. It's on you to decide whether you want to be a cheater. In real life you can stab someone in the back, you just have to decide do you want to be that kind of person.
