I'd keep the properties bar, as I find it useful to read values that I need to use while I write events.
However, not being able to pick objects makes it pretty useful, so I'd like that.
The object bar is now taking up space and duplicating the function of the objects folder in the project panel, as they're usually both visible (but you can't drag objects out of the project panel!)
-remove object panel.
-allow properties to be shown for an object clicked in the project bar, even while editing properties.
-allow objects to be created by dragging out of the project bar into the design area.
whee! more design space!
Also: the ribbon might not be portable, but I don't think IDE portability is a goal anway, just runtime. The former would be a TON of work.