These are some ideas to help make the map maker better!
1. Make spikes be able to connect to crates (and move with the crates).
2. Add ice that can break (like in winter levels)
3. Add Boss spawns.
4. Add Moving platforms (like in the new christmas levels there are platforms moving in the air) and let people put spikes on them.
5. Add chains and spikey balls.
6. Add conveyer belts (like in factory levels).
This is all i can think of thank you for reading this and please add these in!