Update: Right
I have it booted now into the homescreen and can navigate around settings and a few other apps, getting lots of force closes from SystemUI but atleast we've got something. The whole UI appears to scale just beautifully on our device but it's still a long way of finished. I may end up collaborating or opening this up for more devs to contribute too since it's going to be a hell of a rollercoaster patching [MSimTelephony] Multi-SIM references in order to get radio working <--- That being said I'm sure all early Miui V5 ports had references to MSimTelephony, perhaps we can borrow some files if my memory serves me correct.
.: Working :.
Vibrate
Touchscreen
Hardware|Capacitive Buttons
Display
Battery Sensor
Hardware Acceleration
.: Not working :.
USB Storage
Sound
Camera
Radio [Anyone know how to patch MSimTelephony?]
GPS
Wifi
Bluetooth
Light Sensor
...Probably more
Baring in mind I've not really investigated fixing many of the not working as getting radio working is far more important. Otherwise the remaining "Not working" are fairly minor and/or
SHOULD be able to be solved with ease.