Would people enjoy this type of level?

[random 8]

You could also do something like this, though maybe it's not ideal for the ice block puzzle (i'm not sure how exactly you want that one to work):



Also, some more busts in the version currently uploaded:

• You only need 4 red keys - starting at the gravel tile with the keys, go RRUULL, wait for the glider to pass, and then step in the trap and face down.
  
  
• You can skip the ice block puzzle entirely by re-entering the red teleport and overriding left.
  
  
• Even if the exit was walled off from the outside, you'd only need 3 blue keys - open the first 2, then use 2 blocks to partial post.