Default Wondering if Nexus 5 issues are fixable yet

I bought a Nexus 5 on day 1 and quickly returned it once i got it. The screen was so badly washed out it made my Nexus 4 look like a 4K TV, sound quality was just horrible and the defect was insane distortion and crackling coming from the speaker on many songs, I even posted about that here and i wasn't alone.

I returned it and decided to stick with my N4 for another year, since then the bluetooth, camera, and phone are all failing on my nexus 4, i can't focus the camera, bluetooth cuts out constantly and the phone hangs up for no reason with perfect service. So i badly need a new phone now. I hate to even consider another nexus from LG considering what's happening to my N4 but it's more expensive to get a new N4 or Moto X than it is a N5.

So i'm hoping that someone can tell me if through a rom, kernel, app that the washed out screen and terrible sound quality are fixable.

Simple as that. I'd be willing to give the N5 another shot if i can install something that will get the screen to look normal and sound to not sound so ungodly terrible. I had to do that on the Galaxy Nexus for over a year and if i have to do it again so be it. Better that than having a broken phone like i do right now.