Gran said he will take a look at twrp but right now before we try to modify any part of the system, we need a good restore tool.
His tool is not finished yet, for now only sys restore is ready in alpha stage. But better ask Gran
The next step is custom kernel (booted from original kernel) and maybe twrp.
If anyone of you is a developer and/or want to help, just join us and ask for permission to join the hangouts chat.
I am not a developer so I can not do much right now.
But we need help for
custom 2nd kernel booted from original via kexec (i think gran got the part booting the kernel, but the kernel itself is missing yet)
cwm/twrp ports (cwm untouched yet, gran took a look at twrp)
(maybe 2nd boot a different rom)
stable cm source for our device (4.4)
sw based boot into fastboot
xposed modules for stock (multimarket,navbar with recent app menu, ....)
oh we have a 855 mb cache partition, so keep in mind we cannot touch partition tables yet. If you can use the cache partition use it
Hope I don't forgot anything