LilyFlower doesn't do much, and Bleep was promoted to Mod too recently. They tend to only promote consistently active Mods who have been around for at least a year or two, and even then it can sometimes take ages for them to get around to it.
Thing is, they don't really need many Admins to run the site. The Administrator role on Wikidot doesn't have that much more power than the Moderator role, and there aren't too many things the Admins do for the wiki that the Mods can't. There always needs to be at least one active Admin to manage site applications, and a Master Admin with cash to keep a Pro Account on Wikidot for the extra file space, but other than that I can't think of many things Admins are absolutely needed for. They're always slow to promote more Admins because Admins are almost never urgently needed.