Which bug fixes do you consider indispensable?

Okay, attaching it to this post.  I made generic patches for you based on the C3 hexgrab and the knowledge your chocobo patch conflicts with the Banon Riding patch (which was included in the CV compilation).  I can't give you mine, because I've got changes you wouldn't want (such as added spell learning for Mog, Shadow, Relm and Strago, and applying the monster AI overhaul by Hatzen).
Keep in mind these patches are generic: nothing is better than the legitimate article.  If your combat systems are playing nice and your events aren't, then it would be better to select the hex block C0:0000 to C3:FFFF and copy-paste it to make your own custom patch.

Hopefully you have an unsullied version of your event changes, one before you applied CV or another compilation with event changes?  I was unsuccessful trying to 'unsully' a DivergentPaths ROM that had been blended with CV, but I was able to combat-patch a fresh one.  If you've made significant changes in the C0-C3 banks, you'll also want to watch for patch conflicts: you may need to move your stuff to new addresses once CV to C3 is in place.  An IPS report will help you find the conflict spots, though they're a pain to scour.

Just to let you know, I finally got around to compiling my IPS, checking it against yours, and patching mine over the top. It SEEMS to work, so I'm going to go with it. Thank you so much, and sorry it took 9 months to test it out. New job at night, promotion at day job, and new baby conspired to sap ALL of my hacking time.