Ok we all know that I am not the world's foremost Izzy enjoyer but that doesn't mean I'm not happy for him in a vague sort of way. So here are some half-formed thoughts from my morning commute.
You want to fix that old man? Okay. I don't partake because see above I do not enjoy him, but consider:
Edizzy won't fix him. The whole point is this makes him worse. My favorite part of his arc is how he doesn't begin to heal until he releases his fixation on Ed and starts forming his own identify outside of Being Blackbeard's First Mate. Plus, relating to Izzy in the way that Izzy wants is literally traumatizing for Ed and I don't want that for him.
Steddyhands/Stizzy won't fix him because a) see above, b) stede frankly forgets about him the moment he stops talking, c) Ed and Stede are obsessed with each other. While I enjoy giving them a third to play with for sexy times, Izzy would hate this and so would they.
Rizzy, though? Roach would fix him. He's a sadist, he would step on Izzy the way he wants and he would like it. Izzy would bluster and try to manipulate him and Roach would roll his eyes and say "I can always stab you instead" and everyone would have a nice time. Plus I feel like Roach would give great aftercare, and there's plenty of height difference to sexualize. And I think Roach would have a good time also.