I think I already worked on a doc similar to what you are saying. Here is the link: https://docs.google.com/document/d/1A_mSfeVl0BLDT7qCHQV_8-Cm56DFntYZygg_SH4Zhrc/preview
So I use a special Parity alg which doesn't disturb corners. So I complete parity after CMLL/during EO