Storage was running me $840 / year, but mostly I just hated going back and forth to the storage lot to get it. Having the TT next to the house will be much better. Annual registration was $550. Insurance for the truck and camper another $650 or so. So not really cheaper to keep it, but I get your point. The main issue is that it's just less work to not have to deal with all that.
We all do things because we want to regardless if the dollars really make it a good deal. Your truck camper had no DMV registration like the new trailer will, no tires, no wheel bearings, no 55 mph limit on the highway, etc. It just rode on the truck. I went from an 11 foot truck camper on a dually crew cab to a 31 foot TT and always look back to the simplicity/maneuverability of the TC. I cannot imagine any TC being too large but that is just me. I hope your new set up works well. We have a VW Jetta that has 143,000 miles and it is still doing what it did when new. Reliability should not be an issue with your VW and when they sort out the new/modified/legal or whatever really is the root issue for diesel emissions I might even purchase a new one.
I totally get the storage yard issue. My RV sits on the side of my house.
