the reduced amount of panels ( no more se[erate panels for effects for clips/effects / compositions ) is great - brings the fetures much more to hand without having too many panels to flick through.
i realy like the "inline" nature of the effects and the masks ( took me a few mins to realise i could just drop masks in, instead of having a specific place to drop masks )
the timeline magnification stays magnified until i tell it to shrink ( which was something that frustrated me in v3 )
having the numerical readout just above the value slider for parameters is great, much easier and quicker to manualy change values.
im sure there are bits i havnt mentioned, but these parts are making me smile. top work guys
numerical input is like 
