I think you should ALSO target a more mainstream platform like iOS, Android or the upcoming WinMo 7.5 Mango. Revenue generated by those ports could easily keep up the hobby business up and running. There are several SDKs, like Cocos2D which you can use to develop.
One of the guys who founded TouchArcade is an ex-Amiga user that's still around here (forum). I'm pretty sure he would help you to promote some of the apps. Specially if you launch 2 separate versions: Classic Amiga and iOS at the same time...
This guy -> http://www.amiga.org/forums/member.php?u=1774
Maybe it's just my hatred toward both Apple and Microsoft, but blech. I have separate qualms against Google, but they're fast approaching being on my "yeah screw you too." list, though you just can't really beat their search engine... sigh.
Problem with doing that would be sacrificing because of different control methods, generally speaking most types of games do not translate well to touch screens. My advice (and sounds like it might be like this anyhow) is to do it for Linux, Aros, AmigaOS. Then, perhaps down the line when there is a 4th Humble Indie Bundle, put the game in there! Not sure how much the total tally of all of them have been, but some serious money has been donated through that and the buyers get to choose which developers get the percentage of money.
The real question I guess is; are the games / software going to be commercial or 'for the love of the craft' and released for free (open or closed source)?
Also, that's an awesome office. I try to think of things that I should decorate my house with, and I think that Hellboy Poster is now on the list!
If you guys need some sort of Hosting, I might be able to arrange something with you. I have a decently fast connection, depending on how much you plan on using it (something like a Forum would be nothing). Though currently I need to work some things out with power issues, but that shouldn't be too much of a big deal. Let me know.
slaapliedje