we've all established that its completely useless, so i propose this change.

"snipe now takes 1 seconds to cast, and completely stops targets health regen and drops targets armour by 800 for 7 secs."
>> this allows for easier coordinated attacks on a target, and can even go very will in conjunction with UB's spit.

or

"snipe now takes 1.5 seconds to cast, and completely stops targets health regen for 7 secs. Has a 30% chance of dealing a 1.5x critical hit"
>> extra burst dmg is always nice late game.

or

"snipe takes 2 seconds to cast, and completely stops targets health regen for 7 secs. Stuns target for 1.5 second"
>> allows team mates to catch up on a fleeing target.