I really believe that a 68060 @ 100Mhz with a decent gfx card, soundcard, 128Mb RAM, Ultrascsi controller would have been a good platform to run most applications, for god sake my A4000T 060 66Mhz, 128Mb, Ultrascsi runs excellently!!!! I simply do not see the real requirement for 1000Mhz+
After all, our Amiga is well known for iniative... ;-)