I have noticed a significant lack in appeal to the game after playing so long you end up with everything you could want.. So lets ad more. I Will list ideas in the spaces bellow and encourage others to do the same.
A pvp arena. In which a tournaments may be held for prizes picked by the admins and or mods. That bets may be placed on by the players themselves.
I request that the /kick command may be given to donors and up to help manage there islands even if the command does come with some restrictions.
Another request is that players be able to Purchase with sky bucks or threw Donation. An extra island cache slot for there personal usage.
You should incorporate boss fights like the wither and end dragon so players may gain acess to new items in the game.