Again, I can't disagree. You're not as challenging as you used to be.

Mobile devices need mobile UIs, right. A 4.1 inch touch screen on a 226g device isn't a good mobile UI. If you're looking for a good mobile UI, I recommend the 6110 Navigator. Having the choice of various "connected" gadgets (and the ones with the capacitive touch screen we talked about earlier were on the list once), I chose this one for mobile use. Because it does not rely on a touchscreen but is fully operable with its hardware keys. Because its 125g are still too much, but not way to much. Because it fits my pockets. Most important, though:
Because it lets me do exactly these things tso talks about... things that everybody would expect to be absolutely non-mobile use cases but can be done while walking with the S60 UI. I need to look at the device only 30% of the time and can focus on aggressive lamp posts and these wonderful things you see now it's getting warmer and people... well. A touch screen can never deliver this mobile experience. It needs my undevided visual attention.
So, if you want the dog instead of the small horse, leave the horse big as it is (read: go back to OS2006) and make a non-touchscreen variant for mobile use.