Procedural written addons will gain a huge complexity when writing more and more lines of code. Authors must be very skilled in order lower cognitive complexity and keep maintainability.
I unterstand your point kurapica.igas. In my opinion a WYSIWYG editor is targeted to users with below average skill in programming/scripting. Such software will be very complex to write and unterstand if i want support window anchoring, dynamic inheriting of parent frames, user defined properties... (But i will keep this idea in mind for UI creation).
I may overthink my target group of people using this framework / transpiler. It's current cognitive complexity is low when you allready know standards of web development and OOP system but high if you dont.
Wish you best of luck for your Scorpio framework