I just want to encourage you and tell you that you're doing great. I also suspect your W will be a lot more of what you would/will like from now on, and it will even come naturally to her after a while. Eventually it will not feel strained at all.
Your improvements will probably happen exponentially from here forward, to where a year from now, you will be surprising YOURSELF to find that you had depths of sexuality you didn't even realize. Your archetype is not as necessary later in the game and it can and will shift...regardless of the fact that you have been building it all your life up to this point. It is not set in stone. Yes, it will always probably be an underlying thing, the bedrock of your sexuality (same as for anyone) but once you get free to explore yourself more and your wife more, you will likely find there is way more inside of you than you previously thought.
This is not meant to downplay your very real and very valid current archetype. First thing that will happen is that your current archetype will get to play out all of its fantasies with your wife over time. But after that...your pysche will build on to the archetype as it processes new information, new ideas, new pleasures. You and your wife will both build "branches" off of your current archetypes.
Such a fun ride you are on! I can't wait to see what the updates are a year from now.
Just one bit from my own story to share: I thought I knew my archetype too, and I did to some extent...but there are some weird and wild things inside of me I never knew about. Similarly, some things about my man's sexuality frightened me at first but now - chyuh - bring it on darling! (I'll put some details over at my thread later) The same goes for him too, though. He has "been there and done that" on all his OWN personal archetype and fantasies, for about 15 years he did that. But I have things to bring to the table that he never would have dreamed would come out of this little nice girl...things that he would have never dreamed he would be enjoying along with me, things that would have insulted him before if someone would have asked him if he could get into it or not. So even the most wild and crazy bad boy still has new things to learn, new ways he can expand into. The mind is never ending. There are no limits except those you impose on yourself. Some people's archetype is a self-imposition of "this is how I am and it is only how I am, I cannot grow". But mostly those types of people (and I was one of them) just don't know they can grow until they've been shown a new path and given some time to explore it.
Hey have you and your W seen the movie Secretary? Its a bit twisted but it is so erotic, strange and sexual...I'm pretty sure you will both enjoy it very much. It is a strange love story about a secretary and her boss...and it includes lots of spankings.