[Qemu-ppc] Should we replace the PC/XT layout with PC/AT?

[Programmingkid]

QEMU under Mac OS X emulates a PC/XT keyboard. This layout came with the 
original IBM PC. It was later replaced by the PC/AT layout when the PS/2 line 
came out in 1987.

The PC/XT layout works just fine in Windows 3.1 running in QEMU. This layout 
doesn't work well with Mac OS 10.2 and Debian Linux. The caps lock and right 
shift key doesn't work under Mac OS 10.2. The caps lock key doesn't work on 
Debian Linux. I'm hoping that switching to the PC/AT keyboard layout would fix 
any problems with these operating systems. 

Is there a good reason why we should keep the PC/XT layout as oppose to 
replacing it with the PC/AT keyboard layout?