I don't know if I'll update the level editor again, BUT: I think it is very possible that, some time in the future, I'll make a "5/N Step Steve collection" that has remastered versions of all the games and a much more powerful level editor. That depends on how much demand there is for such a thing, though. (I know you're not the first person to express the sentiment of "I want more of this game," and I'm certainly grateful for the support.)
I think you can make it like Super Mario Construct with the top floating bar for the categories. (Btw they updated it to be down instead.) Also make it so you can hide it. I know this is too much but these are just suggestions. Make it so it tracks the Steve’s trajectory (make it the main one) after you playtest. (Make this toggleable.) Edit: Added the “)” after “instead.”.