The UV system seems pretty weak, and it needs some tweaks and additions. I have some thoughts on how it should work:

Shield Life:
^^ my highest request, there's just that feeling that your shield breaks way too easily most of the time.

Shield Status Resistance:
Nobody else really mentions how much they wanted it, but I've heard some say they want it, and I agree.

Handgun Projectile Speed:
Just one of my personal wants, I rarely use guns anyways. Doesn't increase range.

Shortened Bomb Fuse:
Unlikely to be added, I know, but there's always a chance.

Shield Regeneration Delay:
Shield regeneration rate would be an overpowered UV, so this is the alternative.

UVs disabled in Lockdown:
I don't care how much negative affliction this gets, it's still on my list. I feel that LD players without UVs feel weak because of those who have Medium-Maximum! UVs on EVERYTHING, who end up killing them countless times.