If new interactions with the dizzy's blobs were added i'd assume it'd be the london/dissy's update, but I hope there's something planned for our partners that end up there before that point. It's kind of depressing when your wife get big enough and there's literally nothing you can do with them any more.
No talking. No love making. Nothing. Like this is our partner. I'd at least like some way to cuddle with them at this point and have some dialog for just spending time with them at this stage.
I completely agree with you & the good news is that both the next updates will help improve this.
With the next update, Jobs & Home, it'll be possible for your wife to remain living with you at your home all the way to the maximum weight stage, via a new immobility pathway I have planned. The update will also include lots of new interactions with your partner at home.
The update after that, Sex & Pregnancy, will add a variety of ways to make love to girls at the highest weight stages, including in the Dizzy's facility.