I've seen a few servers that have used the basic pure-RO with slightly higher rates theme, and some can do fairly well with it. I think I've all ready seen one with that theme in mind with those rates, too, so... xD Honestly, in terms of things to polish up, I don't really know much about the server besides "It's iRO with higher rates," so I'm not sure what there is to say. xD
If you have those rates, having a CP channel would be nice, just because I kind of like swapping my zeny from my main/s to my vender/OC/DC character. Other than that, it could work, if you could get enough people interested. x3 It's not the newest idea in the world, but it can work just the same.
To answer what people expect from them: not much. xD Sadly, most people don't expect new servers to get very far. Too much competition as it is, and a player base is what tends to attract a player base. =P A lot of people won't join a new server because there's not enough players to make it worth it. In counter, however, there are a few who want to join the shining new servers, but there a considerably smaller portion of those.