What I want is every moving element working on a global timer instead of activated based on the proximity of the player. It was impossible to build intricately timed platforms in levels without auto scrolling. That and no limits on doors / warp points, and checkpoints,
Found the actual game designer. Do you follow Ceave Gaming on Youtube by any chance? If not, you should check out his Mario Maker videos.
I definitely agree with you on this one. In terms of less visible things that would make all the difference in the world for creative potential, this is it. I'd appreciate a few more sub layers as well.