This is a crazy idea, but I personally think the only way for Amiga to survive is to completely open source AmigaOS up to 3.1 and its 68000 hardwares under an agreement with Amiga Inc., the holder.
I think Amiga Inc. could still turn a few bucks by licensing some Chinese or other factory to make a new run of a few thousand A1200 and possibly A4000T; just look at the prices units bring on ebay.Considering with the huge drop in most computer parts from a decade ago such a rerun could be priced well under original prices.
Another idea might be selling a commodity PC with Amiga Forever pre-installed.
Any Amiga rejuvenation really needs an updated web browser/email since I am sure that is the biggest use of home computers.