Certainly, the editor itself has issues. Drawing the things to layers, and their general clunky handling, is why I don't bother with them. I can comprehend why someone thought that setting a default layer pattern for them would be good, but a new class of objects, grouped combos, might be better, aye. Hell, look at the editor. It doesn't even appear visually finished. Radio buttons and pulldowns with no context; huzzah.
I mostly favour upping counts so that future exansion is easier; and adding some generic var arrays to classes, for the same reason. At least the combo class has expansion[6], which I believe is wholly unused. I was thinking of using one of those indices to define Expanded combo types, but some of the base types that I feel it would be good to define will need some additional properties, which means changing the class itself to accommodate them.