Make Media Cache More Stable / Preferences More Stable

I have been having some bad issues where premiere would crash on project load, again and again. I finally went what I consider the nuclear route and deleted all cache files and preferences and now Premiere is back to a modicum of stability but it will take literally hours for it to rebuild all of the .pek files. Also resetting all of my preferece changes takes me 5-10 min and is really annoying. 

My overall question is why is the cache always causing Premiere Pro to be so unstable in the first place? No other app that I know of has this rickety of a system where one corrupted cache file brings the whole house down. Why is there a preference, (best of luck tracking down which one is causing a crash) that causes the whole app to crash! Something is fundementally wrong here and the answer to troubleshooting can't always be to start a process that can be hours long. 

This is the second time in a month where i've had to nuke the entire cache just to get the software working again and it takes hours to have premiere stop acessing the disk constsntly to build pek files, which kills performacne when scrubbing etc. 

Ideas to make this less painful: 

1. When deleteing media cache, have option not to delete .pek files. These seem to take forever to rebuild. 

2. Do away with .pek files or rewrite the waveform code so it doesn't take a whole day to rebuild them on a feature length project.

3. Figure out a new way to cache media that isn't such a buggy nightmare that causes the app to crash all the time.

I feel like most of the solutions on here are "Delete the cache, delete the preferences" but I think we need to "fix the cache bugs, fix the preferences bugs"