I've spent around 2 hours jerking around in Super Mario Maker, and that editor is Briliant! No other words comes close to describe it any better. Instead of having a cluttered palette of items, you have there 16 items on top of the screen. That's it. When you shake an object, it's being changed to something similar. For instance:
Mario > Super Mario > Mario
We could use something similar.
Blue spring > yellow spring > red spring
Standard shield > magnetic shield > water shield
Say you want to make a questionblock fly. All you do is that you apply wings to it. It's that simple. Want to move a buzzsaw on a track? Just lay out the tracks, and attach the buzzsaw where you want it to be. It really is that simple. I totally enjoy this way of working out levels. Nothing beats it!
Then when it's time to upload your master piece, all required is that you can beat your own level. After that, you can get comments on your levels and get them star rated. People can follow you as a level designer. So whenever I upload my next masterpiece, you get a notification about it.