OK, one of the things I liked about Sencha was the additional program Sencha Architect. (Yea, there were a lot of serious issues with it, like only one developer, etc. etc.)
However, it had a most excellent WISIWIG form editor. Could drop HBoxs and VBoxes to control the layout, Easy to change properties on each field, Could re-use toolbars or any other elements. So, what would save me HOURS (don't know about you kids, but when building COMPLEX forms, I must spend hours in the Change / View / Change / View loop to get it pixel perfect.
Yea, thats it. a very fast, very powerful WISIWIG Editor for forms.
Bruce