My wife and I also plan to "partial full time" in our TC when we retire. We will live in a small, very small house during the winter months and full time from March - Early November.
Our TC does not have slides. We pull a small 10ft enclosed cargo trailer with our 650cc Suzuki Burgman scooter in it (we never have to disconnect the TC and usually not even the trailer). This trailer also allows us to carry a lot of extra stuff to include: clothing, food items, inflatable canoe, spare tires, tools ...
Our only problem is the size of the holding tanks. I think our TC has the smallest of any TC manufactured, only 7 gallons each!! However, I see a lot of space to increase the tank sizes, so that will probably be done in the near future.
As others have said, we spend most of our time outdoors and our interior requirements are not much. Our longest continuous stay in a TC was for 58 days, and we had absolutely no problems with it, and we had two cats with us.