Skyblock shop should have some cobblestone costs changed to be more fair.
1 Diamond should cost around 7 stacks, not 11. With 11 stacks per diamond you need 33 stacks of cobble to make a diamond pickaxe (2112 cobblestone), and a regular diamond pickaxe gives you 1561 breaks. *That isn't enough to even get another diamond to repair your op pickaxe.
1 Lapis shouldn't cost 20 cobble. Lapis can only be used with enchanting, lower this to 10 cobble per lapis lazuli.
1 Iron Ingot isn't really worth 64 cobble with cheap iron at players warps. Lower this to 32 per Iron Ingot or make it 64 cobblestone for 2 Iron Ingots (same deal, requires more effort).
Next is /is ms ; or minishop. I've seen minishop active before when sb was first released, bring it back. It would be very effective if you made the cobble trades in /is ms (maybe with the revisions and everything the shop should have).
And can we please finish skyblock shop. Skyblock is the most ignored world and people don't play because it never changes. There is nothing to pull players to skyblock anymore, having an update that releases the FULL skyblock shop would bring some players back. The newer version of skyblock (not really very new anymore) is unique to other skyblocks with the unique nether. Many players have suggested ways to better skyblock, it would be in all those players best interest's if they were implemented. SKYBLOCK ISNT A WAITING GAME, DO SOMETHING!