I think there is too much people dreaming about PPC boards: if you go PPC you need an ugly tower to run anything without crashing because of the heat or low power, and you only get some PPC datatypes or unstable programms to use.
I have myself abandonned my Blizz PPC for years. 68k is really better for classic amiga. 68060 is the ideal CPU.
Hope that new affordable accelerators based on 060, with some extra features like RTG, sound card or fast USB, will be made in the future.