If you're looking for a ROM with no extras, d/l a kitchen ex:
http://forum.ppcgeeks.com/showthread...=46526&page=36 , don't add any OEM's to the base OS and you'll have a super clean ROM. Even with a loaded ROM, there's no law that says you can't shut off the things you don't want, like TF3D. As for 6.5, copper is about as clean as they come, but I'm not using a ROM based on pre release files day to day. If you're looking to do a completely new GUI over WinCE? Good luck to you, that's quite a job! I would love to see someone do something like what Teal did with it's Pre copy cat TealOS for WinMo devices. I installed it on my wifes 755P and it's a better interface than TF3D for a multi tasking device. Then again, there's that whole cease and desist thing from Palm that killed off TealOS.