What about:

Detonation delay
Covert ops
Mobility enhance

Feline Laser ext.mag
Nova silencer ext. mag
Frag grenage

Have someone else used this non standart class?

Take Scar+laser, so you can pwn everybody. If most 'pro' clans use it, you can't be wrong with that combo.
Exploit is available to everyone, so everyone should use it.
/sarcasm off.

Game will die soon, everyday there are less servers, and less players. why bother with classes.

Don't be so pessimistic...