This is just my opinion with about 5 years and around 25,000 miles of traveling (about 75 nights per year up until covid), in our 28 ft P32 chassis Safari Trek (29'5" bumper to bumper), all of which, but our most recent trip last month has been without a TOAD car.
To quickly sum it up, if you are going to travel without dragging a car around, it can be challenging, I know on many occasions I have looked longingly at those 25 ft B+ Sprinter chassis coaches for their ability to fit into parking lots almost anywhere, note a standard full size parking space is 22 ft long, but it is not just about the length it is also about the width as you have to consider tail swing and off tracking when pulling in and out of those spaces. Of course then I step into one of those sprinter coaches, see how cramped they are, and am reminding about how many compromises they make to be so small (small water and waste water tanks, small propane tanks, very limited cargo carrying capacity, both in space and in weight).
Our coach has a 178 inch wheel base, which allows us to pretty much fit into a standard parking space if we can back in and overhang the curb, it also allows us to easily park in a big box store parking lot taking up a total of 4 spaces, either 4 across or a 2x2 grid, in a perfect situation we could even fit in 2 standard spaces end to end if we could pull straight forward to exit, though getting out the side entry door with a car parked next to us might be a challenge. Now I don't know that there are any places that having a coach 1-2 feet shorter would have allowed us to go that we did not manage, but there are probably places where it would have made things easier. 2-3 feet longer might be a different matter.
Attached are a few photos of us parked in places which would have been hard to do in a larger coach or if we were towing a car.
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates