Base Movement speed is too slow, I don't like Sprint at all. Shield recharge mechanic for Sprint only really helps for people trying to sprint away, they can still quickly get back into position off of spawn, or not under duress, which has negative ramifications for map design and long range engagements.
ADS is terrible and needs to get out of the way of my ability to see what is on the screen. Scope is far better, everything that is on your screen is in front of you to be shot at. Ironsights serve no purpose except to satiate the mass audience that somehow needs to see their gun filling up their screen, instead of just what they are shooting at.
It's a terrible mechanic, even if it doesn't have an impact on movement, it's still a big problem.
Lot of the abilities seem to marginalize the shooting skill, charge melee, ground pound especially.