On sky block I think the owner of the server should add a special rank for people who get there island lvl to 100k and if they get there the owner of the island and one other person from there island can get a really cool rank for getting there island level to 100k.ANd it doesnt have to be much just like a cool colored text or somthing.
I personally think you should play skyblock because you like it. Not because there are certain goals in the game which will give you something cool.