Perhaps your crucible question is, "Am I willing to stay in a R limited to my present sexual experiences?"
If so, then drop the BJ/anal/whatever idea. You've already identified that your W doesn't want to. Therefore, w/o an epiphany (which you have no control over), she won't do any more than she's doing now.
If not, you'll have to screw your balls on tight and let her know.
Is it possible that you're operating from, "Yes, I will stay, but I reallllllly want her to do more!"? (How very un-PMish of you.)