Instead of spending hours looking for slime chunks on your skyblock island, it'd be really handy if we could just smack the seed into chunkbase and find whether or not there are suitable slime chunks on the island there and then? I cant think of a reason why we wouldn't be allowed to know the seed. (mods - it can be found with /seed) Thanks
First normal mods don't have access to that only senior mods and above. Second it might allow people to create witch hut farms/guardian farms and introduce mechanics that would lead to people trying to manipulate island spawning.
Support. I don't play skyblock often but I think this would be a good idea. Only admins and above can do /seed.