1) D would be much more comfortable. 2) H would see changes I have made. 3) H would possibly feel more comfortable with D here.
The bad things I see that could come of this:
1) I would feel like a guest in my own home. 2) Can I emotionally handle H being here and be totally detached?
Take a good hard look at the list you made. The good things have nothing to do with you. The bad things have everything to do with you. You have answered your own question. You must do what is right FOR YOU. Yeah, it stinks for your D. That is not your fault. You cannot fix your H's relationship with your D. Yes, your D suffers the consequences and it is often that part that makes it the most difficult. But the situation is the way it is because of the choice that your H has made. If he were to ASK, then perhaps that would be something different. But in my opinion, as you said, this is all about trying to subtly manipulate your H into opening his eyes and that type of manipulation does not work. By offering, you are both initiating and pursuing. Don't do it.
"Love me when I least deserve it, for that is when I need it the most"
M18 Me39,H42 D16 Bomb 1/10 Moved out 3/10 OW 6/10 H wants to R,OW gone 11/10 H moves back 5/11 H wants to wear rings again 9/11