Better Camera / LTE on Stock-Based / AOSP Roms

Hi everyone!

My problem is that I always want to flash an Stock-Based/AOSP Rom because of better performance, autonomy and that stuff that this kind of Roms brings us...

But I always have to get back to Stock, because of 2 problems:

- The Camera lose quality and I lose "pro" options (like manual focussing and stuff)

- Never get 4G/LTE (I don't know why if even I change things, the only way I could have LTE is on Stock)

So I want to solve that problems to really enjoy this kind of Roms.

If anyone knows the solution, please tell me.

Thanks in advance,
Joe