if you were to divide the staff team into each server by choice, then most will probably have kit as their first choice, and then some would have to be put on survival or skyblock despite not wanting to be there. honestly seeing as mods don't get paid, i think telling them to be on a gamemode that at least some of them won't want to be on still won't have that great of a result. i say this because if there's less mods on survival, then it's probably because the staff prefer the other servers. that's still an issue in itself, but the mods and admins are all *volunteers* (i can't stress enough how often people forget that!) and they reserve the right to decide which server they want to play. it's still important to mod the other servers too, though. if survival is under-moderated, then it definitely needs to be looked at more and hopefully they'll do that.
also message staff on discord if you want help. in-game chat moves too fast and has a limited character amount that usually isn't enough to explain things properly on either side. i honestly dk any mods that respond to pm's in-game because of that. all of them just say to dm them on disc