This forum has allready had a thread about recompiling for Coldfire (feck knows were, I can't be bothered to look)and if I remember correctly "clean system friendly code" was pretty much a case of pumping the code through the above mentioned tools. Not all code is "clean" & "system friendly" however but I don't recall the specifics.
The Polish demonstration showed the Dragon as being rather impressive and I have little doubt that many Coldfire naysayers are only saying "can't do, won't do" due to some bizare retro 68k religious attitude.
All that's said and done is just a big steaming pile of nonsense until......I've said it before and here I go again....IT'S ALL WORDS UNTIL THE SILICON IS IN MY HANDS!!!! :-D