So I have been playing with EWG on and off for a few months. Awhile back, a friend asked me to create a few new biomes for a server he was starting so I agreed. Its not the easiest program to use but I have figured out how some of it works.
While we didnt have a formal approval process for my biomes, it took majority consent from the two owners and devs.
One of the first (and favorites) was called skype. Don't ask me why I called it that...it was probably a working title and just stuck.
Some players loved it, others hated it...it was quite difficult to move through without flying. Two players I know did like it for an Elytra course. I built my first store there but later moved it to the official mall.
It does reach to max height so in order to build, one must remove quite a bit of material, but if you are ever worried about griefers, you wont have to in this biome. I'll convert it to 8.0 and post the coords eventually.
I plan on reworking it slightly to make the max height a little less (200 or so) and make the pillars a little wider.
You can see these and more on our server, Realm of Allura.
Server address is mc.realmofallura.com