I found some invisible walls that in my opinion stops game flow a bit.
https://www.youtube.com/watch?v=nNel-BEVMic

First wall is a bit distracting when I'm trying to rush from A site and do a jump and suddenly stop mid air.
Second one is minor because of its remoteness, but is a bit of a inconvenience as it looks as if I would be able to fit through the gap, especially if I attempt to jump over the rock wall.