Actually done a few months ago after we took our first trip with our new to us Class C and before we headed out for a 4 month trip (we are still on it)
We had the old captain chairs, single lone little chair and dinnette taken out and replaced with new flexsteel captain chairs, a 74" sofa and had a cabinet made and put our TV where the lone little chair was. Picked up 3.5 feet of floor space and made sitting in the evening watching TV or just reading so much more comfortable.
Replaced all the carpeting and lino. Made the shower into a closet (we just use all the parks showers now)
"OLD"
NEW" We use 2 of the folding tables shown behind the lone chair as our desks and tables now. They fold up and go on the bed while traveling or when we aren't using them. We also had the little table that slides under the edge of the sofa between us made by a gentlemen off of Ebay. I gave him the dimensions and he made it to order.
This one shows the TV cabinet and how we relocated the TV across from the couch
This one shows the material that I made all new curtains with along with our shower closet (added so much storage that I could never live without it now)
This one shows the new kitchen faucet and filtered water dispenser we installed Also shows the huge counter extension we did last summer.