(I've been taken to task for using that word, too bad :-) )
My vagina is still very low mileage and as much as pre-op sex had been on a long slow slide of diminishing returns it was high mileage equipment that I have to acknowledge gave plenty of happy times. I also know that that now removed appendage while the center of most of my orgasms, wasn't the only way to have them and the less I focused on just that, the more I enjoyed them.
Penetrative sex had always felt like an uncomfortable role, and as I feel my way around the new landscape I often have a pang for the simplicity of knowing all I had to do was stroke it and it would get hard. I'm certain I will miss the option of thrusting penetrative sex and its simplicity. If it was a role, it was a role I played well. I also went for GCS before I got to enact a couple of fantasies which now can't be visited, c'est la vie and I'm glad to say I've now already visited long standing desires that couldn't be met before.
I believe orgasm and sensuality more generally live in the brain and especially the limbic system and of course throughout the body. Still we invest our energy in erogenous areas that are certainly affected by socialization perhaps as much as by our physical bodies.
The repurposed shenis serves on inverted and I'm of course glad it's already giving me new pleasures, having learned how to be sexual with a masculine layout and then relearned with estrogen, I'm sure the new layout of the old nerves will work just fine.