True. Many of the things he may have wanted to do didn't fit Palm or HP so are unexplored or unpatented. Trust me, the hire will be very good for Google.
The biggest complaint about Android has been UI. If he does only one thing, this will be it. First task, get Sense and Touchwiz simplified so releases don't have to make stops there. Second task, get carriers completely involved in release simplification. Third task, watch Android really explode.