title: GWT Super Dev Mode
body: <p>I am very concerned for this new alternative for development life-cycle.
  Actually by this feature we are compiling Java file to Js in a super draft mode but what happens for very large projects that normal compilation takes over 45min (my last project) ?!
  every time I change something in UI I should recompile all codes?!</p>
  
  <p>Optimistic  speaking, it should take over 5mins to recompile in super mode!</p>
  
  <p>Please let me know if I am wrong.
  Regads,</p>