Yes, First release OS4 for every PPC Mac ever produced as fast as they can. Second port it to the PS3. But in any case PAY someone to create a modern web browser and keep it current with all the codecs you can. Don't let it fall behind by ten years all the time.
Then, and only then, unless you have some absolutely KILLER application up your sleeves, will they be able to get even a few thousand NEW or returning users and a couple hundred programmers that will be interested in creating anything for the AmigaOS. I would not be surprised to see Hyperion (or heaven forbid A.Inc) sell 2 to 5 thousand copies of OS4 for the PPC Macs if they could pull it off correctly and get it out of the courts.
All of this is highly unlikely to ever happen, so I never get my hopes up anymore since about the last 10 years or more.
Edit: At least having it on a Mac would allow dual booting back to the MacOS to use Firefox and other must have applications until they started to show up for AmigaOS4.