As to overall performance, we saw a good deal of stutter in the Galaxy Nexus before us. Taps were not always recognized and there were occasional delays in performing an instruction, though in Google’s defense, it was a phone fully loaded with running tasks and the software is being continually improved and optimized (i.e. it’s not yet fully baked). That having been said, it unfortunately remains the case that Android isn’t as swift and responsive as iOS or Windows Phone (or even MeeGo Harmattan on the N9). Or at least it wasn’t on the demo phone we got a look at. The subtle, pervasive lag that has characterized the Android UI since it inception is still there, which is not a heartening thing to hear when you’re talking about a super-powered dual-core device like the Galaxy Nexus.
Maybe instead of cramming the device with rarely used gimmicks you should fix the basics first, no?