MorphOS and AmigaOS better integrate 68k than it is possible using X86 or ARM f.e. and you can add features by adding 68k libraries. On the other hand is a sandbox solution more clean so you can make changes to the OS more easily without breaking 68k compatibility. Both solutions have advantages and disadvantages. From a user point of view (expecially when it is not a hardcore amigian) it is not important if it is emulated (in hardware or software) or not, the user is only interested what programs run on the system and how good is the hardware he/she gets for the money. If I have the choice to have tighter integration but am stuck to aging and expensive hardware platform or have a sandbox solution and modern hardware and a better improvable OS I would clearly take the second.