I dunno, I have NO problems without a proximity sensor. I've never accidentally hit speakerphone or any of the other buttons while on a call. I also couldn't care less about a flash. I don't need to take pictures in the dark lol. The chip certainly doesn't appear to be everything, since my loaded down Hero runs my Mom's nearly stock Moment into the ground, and I'm sure it still will when HTC's 2.1 with Sense comes out and compares to stock 2.1. I've also had the Hero since mid-October, carry it in my pocket all the time, and still have no problems with the trackball...and my pockets aren't exactly clean considering I live and work on a farm. I cannot stand that goofy optical trackball (or whatever you want to call it) on the Moment, and neither can my Mom.
I certainly wouldn't be able to stand not having an accurate battery meter out of the box. As far as I'm concerned, if Samsung can't even get a simple battery meter right the first time, how do I know they're going to support the phone at all? Especially if they don't do a MR within a couple months of the phones release to fix the small problems that will inevitably occur (bad battery meter is by no means a small problem).