Yes, there are debian users to test it. I am sorry to have not given more efforts into making debs myself, so I can at least do some testing.
First thoughts about packaging:
1) It sounds like I already have a repo providing libbullet, probably the one from which I installed unvanquished. Same version, so maybe you could speak with those guys. Having to do the packaging job by two teams is sad, and maybe you could speak with them to unite (and reduce) the work, and maybe submit it to debian's team?
2) openmw's engine is not a non-free software for debian. It should be in contrib, as its only real dependency outside "main" is the nvidia toolkit. If it was removed, and I think it can be set as "recommended" (not sure), it could be in "main". The only thing which should be in contrib would be a script to detect Elder Scroll 3 's data, which is a non-free stuff. I think I have read about people wanting to build total conversion, and I have also read somewhere here that people were planning to create a demo, so removing that nvidia dependency could allow to send openmw in the "main" section.
3) openmw-launcher binary have a weird name: omwlauncher. Since I run my applications from terminals or dmenu, renaming it might be a good idea. Not for me, but for other people doing things in the same way than me. If I understand correctly what I can read on debian-user mailing list, my situation is not so uncommon for a debian user. I think a name like "openmw-launcher" would be more easy to guess without a menu.
4) it could be interesting to create a deb which create a file in /etc/apt/sources.list.d/ containing the line to add in sources.list. I know that trick thanks to opera. I could create such deb file manually if needed, it only takes 5 minutes. But I have no idea about signing stuff, so I can not do that part of the job.
About source code "issues" (easy to say, and maybe hard to fix issues):
5) I am not sure, but I think there was a way to avoid disabling the second screen when running openmw. I also notice that, when openmw is ran without game data, it disable the second screen for nothing (I am using xrandr stuff combined with nouveau driver, so maybe the problem come from nvidia toolkit?).
6) if openmw-launcher or openmw was able to let us create a game which starts at starting point and with physics enabled by default, it could be interesting, because it would allow to try new stuff added more easily.
Except those points, openmw perfectly runs out of the box on an amd64 debian. Congratulations and thanks!
I have no powerful enough box using a 32 bit processor here, so I will not try the :i386 package.
Some more informations about my computer could be of some use for people, so:
$uname -a => Linux deskber 3.2.0-4-amd64 #1 SMP Debian 3.2.35-2 x86_64 GNU/Linux
I am using sid, without desktop environment (but a xorg server, I'm not entirely mad
), and this computer already have various development libraries.
Using nouveau, on a dual screen configuration.
I will post an update with experimental repo added and an upgraded system in few minutes.