I prefer using quickdraw, i mostly play sniper though. With it u can "quickscope" faster
I use faster run, quickdraw, marathon, ready up faster(dont remember excact name, i prefer BO1 ;D), dont remember all xD
Meanwhile off the grid would be the only skill in my eye i would change it for, but not on sniper.. U need to be fast up and shot to have a chance unless u camp ofc xD
The "spy planes" are kinda overpowered on ghost, its like blackbird on BO1 ;d