Earning money and spending it.

[Kase]

The servers economy should be realistic or at least close to it, would make the server much more interesting in my opinion.
For example: $2500,- for 12 rounds of Sawn-Off spawn ammunition, $1000,- for spawn armor.
Just triple/quadruple the Ammu-Nation's price for spawn weapons or something like that.

As mentioned by other people, keep the ATM's and make it so everyone could use them, not only the regulars.

I +1 this. Realistic economy makes things more interesting.