I have a guide for getting ESO to run from a blank Crossover bottle. The PoL stuff should work still but the requirements are VERY simple, with a few config file edits, and Zenimax's digital certificate. I suppose let me know if things go awry, I can reinstall in a new bottle and see what got janked up. The major two things that get missed are the OpenGL settings in the config file and the digital cert.