I would like it if you could try to make a pigman spawner and sell it in shop for maybe 1 million or even 2 million because they would be very good to get gold to level up your island after a while of saving. I also know that a lot of people would save up to buy it.
Pigman spawners got removed on skyblock due to the fact they are pretty op. They won't be added back anytime soon since they got removed.