the Kyro series are quite good indeed but its limited in ways of coding + it costs a lot to get the liscense , and most of all as earlier replied by others , it only renders whats on the screen.
also the DC didnt die because of the hardware or the software, it died because of SEGA's lame way of marketing their products and maybe most of all they turned every developer down due to they wanted to kill it themself (almost like nintendo GC 1 year ago, but it has resurected!).
want to put this chip in an amiga? , do u know what the liscense cost? , who will develop a devkit for it? , i wish it would have been an easier chip to program
cheers
pps:not a bad suggestion indeed but can you afford it?
