As long as this principle of Form Builder maintains of a editor that needs tons of DIVs your better of using Dream Weaver's insert form elements. It works faster without any errors and needs a little simple CSS for styling. When Form Builder would be a extension that is inserting a complete "Basic" form and producing clear and good explained styles/rules it would only use 5% of the code it needs now, be almost error free and 5 times faster to work with. The problem is that a lot of people don't really learn Dream Weaver in detail (I'm not talking about you, but in general!) . I did, so as soon as I tried Form Builder and noticed all the bugs and tons of code I went back to normal coding. You learn the principles of inserting forms with Dream Weaver in hours it's really very simple and much faster then Form Builder.
Maybe the new update will be different, but I doubt that this principle is changed for the better! Good Luck