I am not much bothered about a CSS/flash/java browser if the target machine is AGA or less, simply because the pages will still look crap and in low resolution. I think the apps would be better written to what the Amiga is strong at, paint/animation programs, TV and music editing, games and possibly an office-type package. A browser is nice but most websites are targeted at much higher resolutions than we can handle - unless I suppose if it is done but with loads of support for the various graphics options.....
... saying that, gfx cards are RARE! How about expanding the bounties to include hardware? By paying the hardware guy's R&D costs, this would allow them to make classic hardware without so much financial risk....
