Guys, nothing is easier as we think. The dev have tried hard to figure out every bug that we gave. So give him respect for this. A lot of sacrifices he gave to make this rom less of bug. So if you want a perfect ROM as you want, why don't you try ...
1. Yes it's posible. Me, primary stock 4.2.2 and secondary CM 10.2
2. Why not
3. I didn't about it. Just follow Android-Andi rules
4. Vendor blobs just for 1.8.2 kernel
5. No if you straight use old kernel (1.7 and older), but cannot use for stock...
I currently have Pac man rom installed and I have a backup of cm 10.1 nightly.. I restored the cm and flashed the next kernel then philz touch.. I then flashed the next tool and created a system image (2nd option) then booted to secondary recovery...
Can't wait Slade finished this ROM