The main reason I did the stands when we were car camping (besides the cool factor. I had at least 3 people come ask me about them) was because the site, Prince William Forest Park, didn't allow anything hanging from the trees when I called to ask. Turns out that they changed that policy after I called and before I got there (it was a couple of months) to allowable if the straps are 1 1/2" and up.
Anyway, the biggest advantage I think is that if your rig is dialed in before you get to camp, a 9 year old can set it up. The only hitch we had was that my daughter's (she's the 9 year old) loops used to hang the ridge pole got left at home. So I had to hang it higher than normal. I have to admit it was nice not having to look at the site and try and figure out a compromise between livability and a good hang set up. We just threw them up where ever seemed good.
I didn't think of doubling up hammocks to reduce the number of tripods. I might play around with it some.
I have also had my set up blow over in a high wind in the yard. But at the Park, it stormed from 3p until the next morning. It was bad enough the rangers considered closing the campground. But with all the trees blocking the winds we didn't feel it much at all. I think if the campground is at least semi sheltered there wont be much worry of getting it blown over.