Like us, I'm assuming that Jim rarely if ever uses the dinette as a bed?
We have been kicking around the same idea. In the next few years we have tentative plans of going south for the coldest months. With that in mind, we would like a more comfortable place to sit than the face to face dinette.
A larger TC and the necessary larger dually truck would be nice but our low mileage short bed 2012 truck is paid off and the TC should be paid off in a couple years.
Also going to a short TT or short 5th (we have looked) would have a couch or recliners but we really enjoy the compact size of our 24' long combo. We value mobility very highly.
I have been looking at RV couches as well but in our situation we don't even need the fold down option. Yes, I understand we will be losing the storage space under the benches, both inside access and maybe even most of the storage space available through the two outside hatches.
If I find anything I'll post it.