when you use cover system, your movement is limit to two direction(unlike normally wasd is 4 direction with elevation of ground). And ur head is fix when you aim(also aim in cover not allow to have any movement too)
roll is bad too as your movement also fixed once you starts the animation.
And use little steps movement make other player aim to u way more difficult(you can go to right 0.3s and change to any direction, ppl just cant predict so easy as in cover, which you can only go left or right, or pop the head in fix location.)
Ofc I choose this map is because its hugh and no narrow covers for wall bounce XDDD