Got the D2 yesterday and have been playing around with it. I will have to say that I loved how clean the D1 was but this phone is nasty fast. For what it is I like it a lot. I didn't go crazy with the endless possibilities that you can use a Droid for on my D1, so the customization aspect isn't that big of a deal, but for me is still very customizable. The D2 is very cluttered and that makes me want to root it but we'll see. I have all the same apps and the phone hasn't crashed. I suppose that remains to be seen. As of now I am very happy with the D2. I like some of the Moto widgets and other add-ons, but like i said it is very cluttered. For every good one there are probably to or three worthless ones but i have been able to clean it up a bit. Like I said loved my D1 but I figured I would try something new and it I can't say that I'm disappointed.
Pros- Wicked nasty super fast, way better keyboard, some widgets, new design
Cons- Very cluttered, crap apps, crap widgets, all these= Wasted space