You just late about 10-12 years. Currently there is no way to "put back amiga on the map".
Reasons? Listen, in my shop i sell daily a lot of pc wich is under $250~300. It's contains a 3GHz cpu 256-512 ram, hdd, dvd writer,case,mouse&keyboard, vga card. These crappy machines can easily play movies,run almost the newest 3d games, realtime cristal-clear audio apps, etc, so more than an amiga can offer nowadays.
Now try this on an amiga. I built almost an ultimately classic amiga for myself because i love this machines, from the first time i hear/see her. But for serious business it is out of match. Who can buy a machine which is expensive than others, but offer less than the others? No one. Only way if you are the chairman of microsoft. Then you can do that. But if you will be that person you will be seriously build your machine (xbox) than you continue someone elses work.
Of course i will buy OS4, and if it ever be a new hardware for classic. Maybe a new amiga if it is offer some benefits for the pc or others. I want to see the amiga comeback, but i think it have no resons. And now the amiga community is no more million of people like in mid '90. Now i think its only a few thousands men hobby.