Many of the current roms use CM11 base or are derivative of CM11 code.
- Experience Project
- PlayfulGod's CM11 Unofficial
(they all likely use the same base, only differences are the cherry picks they merged into the rom)
PA had a pure AOSP 4.4 build but it's unsupported. Haven't checked out Gummy or SlimKat's sources - might want to look into those.
ROM development will definitely pick up after the kernel is brought up to the necessary changes to fix webview lag, that is the largest 'unfriendly' bug so far with getting maguro to 4.4.
Mako E960 4.4.2 KOT49H - OmniROM Official - Maguro SC-04D 4.3 JLS36G - OmniROM Unofficial - Maguro i9250M 4.4.2 KOT49H - OmniROM Homemade - Razor 4.4.2 KOT49H - OmniROM Official - Grouper 4.4.2 KOT49H - OmniROM Official