I'm highly considering getting a PS4 Pro to replace it.
You should. The PS4 Pro is absolutely worth the upgrade. I really like mine.
So, my PS4 has been REALLY loud, like annoyingly loud, and my new entertainment system doesn't really allow for breathing room unfortunately, so that might be part of it. I'm gonna look into cutting holes so it can breath better. My PS4 runs REALLY hot in there, but my X1 runs really cool in there... so maybe my PS4 is just crapping out.
So I FINALLY opened up my 20th Anniversary PS4 (#408) and swapped the drives and did a restore and this one runs a little quieter but it's still running fairly loud and fairly warm... so after I cut up my entertainment system, if it is still running hot and loud, I'm going to upgrade to a PS4 Pro.