Questions about the Leviathan Server

Hello, I was thinking about changing servers, and I am stuck between Leviathan and Gilgamesh. I am from Midgarsormr and it's just not cutting it anymore. It feels really empty to me and it's hard to get End Game content done on there. So I was planning on switching servers to either Leviathan or Gilgamesh. I am a leader of my own FC, and some of my friends and members were going to join me on server switches. My question is, how populated and successful is Leviathan? Is it better then Gilgamesh? If I was to move to Leviathan would my FC survive? What are the odds it would considering there are probably alot of established FCs there already?

I may be biased but Leviathan has always seemed active to me. Given now that people are moreso doing Atma stuff, there are always coil groups posted in party finder.
I cannot speak for Gilgamesh as only other server i have been to would be Phoenix