Ultra was amazing in comp.
It takes a lot of skill to be able to play the mod on a comp level, sure your rifle fired instant kill or close to instant kill projectiles but the players with boosts/airbreaks could change direction in less then a second and be moving 500m in another second. A lot of people hated it because it was so fast and hard to stay alive when good players were on, i think thats why it has had such a bad rep.
Legions really isn't too far off from UR/VX as it is, we have the speed and the weapons are pretty quick already.
There is a lot more to the mod then just sniping and capping, try it out sometime.