I dont think the Amiga name-holders really care much about tapping the huge "nostalgia" fan base?
If they did, there would be all sorts of Amiga badged gadgets (not just T-shirts) you could buy from their website.
Firstly, I think they really need to concentrate energy on "re-introduction" products, the sort of things us once-were fans can impulse buy. I'm sure said products could have a reasonable markup over non-branded items and become a worthwhile revenue and advertising source.
Then, they need hardware at closer-to-PC-market-prices, say something like the Mac-MINI, an all-in-one solution you can just slot into your old PC desktop space and experience.
At the top end, you could have something like the A1 for hardcore users and developers.