I am not any dev just a noob with basic info...
I have a nice idea and suggest you devs to have a look...
>> Make the lightest ROM ever possible for android with high basic tweaks like 3G on both SIM, 400 MB swapped RAM and 13 MP Camera and lots of system partition free [Reason in the 3rd point]
>> OTA support only after testing it successfully.
>> A large variety of flashable .zip files on the thread which the user can apply or remove on their own wish like Bravia Engine 2, Xperia Audio Engine, MultiWindow Mod, Statusbar skins, PurePerfomancesX and many more which can be added further.
>> Completely user-friendly and customizable ROM.
>> Android 4.4.2 and 1080p recording if possible.
>> Guide for safe build.prop tweaks like LCD density.
>> System partition statistics like free space in partition and used.
Please give this a thought.