It sounds like all the rules are getting to be a bit restrictive.

You know, ZB, (that is infinitely harder to type that WB, btw) I think the only way out of this is to communicate your feelings to her. I know you want to avoid it, so that you don't go back to square one, but that will keep you stuck at status quo forever.

Can you nicely suggest a little variety? Or once a month, you get to pick the position? Something small so that she has a chance to build her confidence and feel secure with what is expected of her.

I would leave the oral issue completely alone. That is 20 miles down the road and you haven't even started the journey yet, kwim?
Get her used to sex (real sex with variety and both partners having input into the process) first and then see if her comfort level increases wrt oral, or stays the same. It may never change (:( for you) or it may not. As you yourself said, 2 years ago you never would have been able to picture yourself getting it once a week, like you are now.

Good luck with the talk!

H.