It would be nice to have the possibility to have custom views when developing a form, rather then being limited to the types natively exposed. I don't know if that's feasible, but most of my forms have at least a couple components that require custom logic (for instance, a custom icon picker with a button that opens a popup that shows every available icon). I'd like to use the builtin features of auto-hide and validation, but the fact that I can only use native components is quite limiting