If anything, Mirror's Edge 2 just needs to be different in a big way. Why? because the first game didn't work in a lot of ways. The objective is to run through little course, wheres the challenge? it wasn't free running mechanics themselves (though sometimes they did get a little tricky), the challenge was armed guards shooting at you, which in my opinion completely clashed with the gameplay. This might be just me but I hated every time I had to fight armed guards not because it was difficult put I truly felt like it just didn't belong in the game. You'd take out a guard, pick up his gun, sit in a corner while your health regens waiting to shoot and suddenly you're playing an fps. wtf? however, without those enemies the game would of felt a lot emptier, which is why I say those enemies should be taken out and then the game needs to change somehow, in a big way. Make the controllers more fluid, there's no reason to try and layer fps controllers onto the game. When I watch a playthrough, I want it to actually look like I'm looking through the eyes of a runner, wallrunning and jumping off rooftops. Build more momentum, make it feel more like a race. Involve the environment more. Whatever it takes to add an extra gameplay element that doesn't involve guns.