The mouse pointer support for CM7 had already been submitted and rejected for mainly cosmetic reasons. Granted mouse point support has regained some interest since I posted this and maybe cyanogenmod will revisit the idea. Part of the problem is that CM7 has more pressing issues to address.
HDMI mirroring is kind of a small world so I'm guessing you're referring to bradleyw's vid of Android 7? He and I are subscribed to each others Youtube channels.
Android 7 is nice, And-Win Home is much prettier though. The only issue I see from an end user stand point is the switching back and forth of launchers a couple times a day. After a while most will just end up using their regular launcher.
There's really no code to give. It's all based off of existing code with purpose specific changes that are easy to follow just by looking at end result.
The browser , xScope from x-Labs, is currently available and is not mine. Unfortunately there has been no response from x-Labs for over a month and any further development of xScope may be dead with no source code available. I'm trying to see if I can get Maxthon on board but only time will tell. Until then there's still an open call for devs.