I understand exactly what you mean olishea. I feel that too.
In sketchup 2014 one thing that surprise me is the shadows improvements, making it 15x faster, it's the kind of background improvement that don't change anything for beginners but make all the difference, before I use a rule to only turn shadows ON to test, never used it on drawing. Now you can.
2014 also gets less bug splash. All I can ask ( for now ) is the same as you. LARGE MODELS, better frame rate, faster copy etc. I think it need a better engine under the hood. These changes is very core stuff, but is perfectly achievable.
But the way it looks and the way it is used maybe don't need to changed, its is "perfect" for beginners and very customized for advanced users.
Maybe trimblers can say whats been cooked in Boulder for us. 2015 is near.