All what you are going to read below is just an opinion, No offense.
Honestly I really want this to happen because I had a nice start in the official omegas server 9.1 but since i knew it needs to finish the whole quest lines such as witch and MC quests I gave up because I have no time to finish those and make more characters and complete them over and over again.
First, 3 servers is a bad idea actually, each server looks empty you need a nice beginning with one server to collect a good number of long run players.
Second, The PvP seems to be insignificant due to the huge need of farming and making gears and pets. I mean not everyone will be able to get ready for pvp fun some people have little play time and others have all the day so you might need to consider this. ;)
I don't think it doesn't matter if you have a cash shop :P
and yeah that's it everything in the server is really good except rates.
you have nice server buffs, prices and NPCs.
Thanks and wish you best of luck.