The gamemodes are completely useless. The only ones that are any good are the Rampage and Tutorial ones. The tutorial obviously could be a button on the initial Blockland start screen, just like it used to be, and I'm sure you could think of some way to include Rampage in custom games. If you did that, we'd also have the option of making custom Rampage maps; but if you don't want that, you could easily prevent it. The biggest issue is the Tutorial though. No new player is gonna find it. I certainly haven't met one who did.