I think on sky block there should be some other kits like kit blocks or kit farming because i find it quite hard to do a island with only able to get free bone meal and saplings
I'm not a person that is huge into skyblock but I understand the fundamentals and I think adding kits would make the game mode to easy. Skyblock is supposed to be a challenge especially when you are starting to grow your island. I have seen people make huge islands without the help of kits. However I don't play skyblock much like I said so my say may not be as good as somebody that does play it often.