Again, the voting thing was only something i heard in passing! Last time i heard anyone talk about it was months ago, and I have no idea if it was even being considered.
also, back on topic: If you DID want new/more rewards for inviting people to the server... what could possibly be good enough? i mean, this is a survival server an' all - wouldn't really want to give ya to much of something that ruins that aspect, to be honest.