Sorry for the delay folks, traveling for work lately.
traveler the firmware update used to be posted right on the VInc site. Looks like you got in touch with them and they're sending it to you anyway, you should be all set.
Gregg,
1) Yes I tried it and it mostly filled the screen, there was a small border around the image that I could probably fix by zooming but I never bothered, I didn't like the picture as much as 720p so there was no point.
2) I'm letting the HS10 scale the image up to fill my 100" screen
3) In my opinion the colors look better and the picture is much less grainy in 720p. When I first got the Bravo I had a showing of Two Towers. I work with a pretty technical bunch of folks and invited 10 of them over to watch it with me. Before we watched the movie I showed them the various Bravo modes (480p, 720p, 1080i, and full panel resolution).
It wasn't a scientific comparison by any means but everyone agreed that the 720p image looked better than all of the others, the colors looked more accurate and bright, the dark scenes looked better (clear, able to discern detail, etc.). Needless to say we watched Two Towers in 720p and I've watched everything else that way since then.
As for your postscript, before I answer I should mention that I'm a computer geek by trade and I have a pretty high tolerance for bugs, workarounds and the like.
Do I like my Bravo? Yes - I love the picture I get from it
Is it reliable or flaky? (I'm laughing as I type this) It's flaky, without a doubt. However, I have only ever run into one DVD that I couldn't watch on it (something we rented for my 5yr old daughter, don't remember what it was).
If I'm persistent I can get any movie to play, usually by cycling the power on the unit (not from the remote, the real power button - the remote puts it into standby). Does that annoy me? Usually at the time I'm not real happy about it but I don't really have anything to complain about - I heard the stories of the issues with the unit before I bought it, I went in with my eyes open knowing I might have to "fiddle" with it to get it to work sometimes. Would I prefer it just work perfectly every time? Of course, but I'm got lots more important things to focus my time on - if I wanna watch a DVD I can, it might take an extra minute to cycle the power, but I'm fine with that. I suspect the issue is with the loader and that I could solve it by swapping out the loader like others in the forum have done. It hasn't bothered me enough yet for me to spend the time on it, maybe it will down the road.
I haven't heard anything personally on the D2 but I'd really hope they resolve the issues on the next model. Overall it's a great unit, they just need to fix two things, the loader problems and the damn remote.

The remote sucks...really