no its not about this, i wont spam this topic anymore but i will say just this... (talking about h5 mid rate scene, no idea how going now interlude)
you need atleast group of ppl who will test everything if you open mid / high rate, since you need nerf / destroy some skills / boost some skills , same as quest (at every server it work different, so you need find good way for your server)
after you need decent developer who have knowleges, and will do it ...
and when you want open server u need first open some with random name / different hosting etc (when you fail u will fix things what ppl reported etc)
and after 2-3 random server, u can pay for advert / ddos etc.. and open server with your main name of server (like l2dex , tales / destiny etc did)
its not easy like u think, thats why l2 is now so trash game since everyone download pack, fix some things (not even that) and open server for 10-20 ppl