Nice ones.
But unlimited nos is possible with /bind

/challenge = money idea
This can be abused with someone to gain fast money

unlimited nitro
good idea, but /bind is possible (u must release the W button though for next nitro :/)

lotto
already 3 times suggested, then the tickets should cost money.

bigger ramps.
not possible due the fact that San andreas just has 3 different sizes of ramp, a bigger ramp would need more than 1 ramp. but i like it if u can spawn 3 ramps.
(btw admino, if this idea comes, be sure to check that the ramps won't appear in stuntwar like the other ramps did)

having a 2nd house is a bad idea... ive maked this suggestion to and they said its a bad idea.... cuz all can buy the houses... and when new players join this server and they wanna buy a house, then there is no more house to buy

noone talked about 2nd houses in this topic?

/challenge prize money = EPIC abuse

about ramps, there should be a different ramp option =)

Maybe, if they won the lotto, they could buy a house for half the prize?
NOT A SECOND HOUSE, ONE HOUSE ONLY.

I used to own lots of houses lol but then i sold it all for 1 house

Don't go off-topic, this isn' offtopic section :S