I was wondering, had you ever thought of a vip service?
You could make it any amount you want a month or a lot for a year, my ideas were:
Obscurity: 3 extra lives, perks not available to regulars and maybe brick_blaster_mp.
Deathrun: 3 extra lives, brick_blaster_mp, double xp with kills.
High xp: Default weapon, ability to call votes or change maps.
Promod: Always Sniper available, double tap, sleight of hand
Those are my ideas, of course you could do as you wanted.