I would like to suggest adding some new functions:
1. Friend/Facebook friend function
It likes Gun Bros, you can hire a friend to complete a mission or send gift
2. Changeable Outfit
It likes Gun Bros, different outfit proivdes different effects, for example, bikini will increase Evelyn speed by descreasing her HP.
And for the new area, I suggest:
hit the slot machine to get glu gold coins and cash!!
2. Shopping Mall
with at least 2 levels for roaming, shopping and hunting!!