When we leave town in our View, we don't worry about how long the trip is. We know that as we are not full-timers, we will eventually come back home. We have no problem with the overall size of the View, but we also know that we would not FT in it......
We take along a set of tri-level blocks. It only takes an extra 1 to 2 minutes to take them out of the storage compartment, lay them down on the ground, and then drive up on them. These do not cost very much at all, but more importantly, will never break down. One cannot say that about a leveling system. Also, one does not need to get wet to deploy them when it is raining. If it is raining, you can wear a raincoat, or just wait until the rain stops. Just like when you do the hookups when it is raining.
That being said, I will also say that we only use them in about 25% of the campsites we visit (always state parks). If we did commercial campsite, we would probably need them even less.
We have an '08 View, and can therefore tell you *accurate* information gleaned from actual use. First -- you can indeed tow a toad. IIRC, 3.5k lbs. capacity for earlier models, and 5k lbs. for later models. But why would you want to? A View/Navion is small enough to get anywhere there is a road and adequate height clearance. We go everywhere in ours, so we have no problems to "see the sights". On long trips we sightsee during the bulk of the day, and go to a state park for the evening and next morning. Then, it's off to the next destination. On weekend trips we go to a state park and just stay for the entire weekend. No need for a toad there either.
Our View has had no problems of any type. Only normal maintenance has been performed by one of several auto mechanic shops nearby (I change the oil myself). As parts are readily available, maintenance costs are not any more than what we would spend on a Ford or Chevy. Many auto mechanic shops can perform normal maintenance on these things. If you are worried about not being nearby an MB dealer in the event of a major breakdown, you can get towing insurance that is obligated to take you to a place that can handle your needs.
We have not had any problems with any of the house systems either. Not a surprise to us, as there are two other Winnebago motorhomes in our family, and none of them have ever had any major problems. Winnebago knows how to build a motorhome, and they do a very good job of it.
I really like driving our MH. It handles* and rides better than the Fords and Chevys that we tried. Also quicker too. You will most likely be surprised at how quick they are. We get anywhere between 13.5 and 15.5 mpg, depending of course on how fast we are going. I could probably get more if I drove with a lighter foot, but mileage is not something I give any thought to. After all, we did not buy it because of it's fuel efficiency. Any passengers you might carry will really like the space on the front passenger side. Not only can a front passenger put both feet side-by-side flat on the floor, there is a great expanse of floor space in the cab. And a great amount of headroom too, just in case you wear an extra-tall hat.
*one thing we did change was the rear swaybar. The View does sway side-to-side easily when making a low-speed turn onto a roadbed of a different height such as entering or leaving a parking lot. A thicker swaybar makes a noticeable difference, and is worth your time to investigate should you get a View. No, one does not *need* to get one, but it was worth our time to do so. Changing them out requires the removal/replacement of ten bolts (two brackets with four bolts ea., and a bolt at each end). Takes about 15 minutes.....
Besides the Nexus, you might also look at the Winnebago/Itasca line. They also have fiberglass roofs and endcaps. They have been around for quite a while now, and know a lot about how to make a motorhome.
One thing to remember when it comes to leaks -- no matter what brand, and no matter how the outer walls/roof/shell is made, all MH's are going to have very large holes in the walls/roof/outer shell. It is at these large holes where a MH is most likely to leak. These holes are known as windows and doors. All MH's have them. It is not just the way a MH was designed that determines whether or not it will leak, but also the *quality* of construction that will determine whether or not a MH will leak.