Yeah, when I crawled under my trailer and had a look I thought "Oh crap". I expect problems down the road. What do they make these frames from? Melted down coat hangars? I have a 25rr and after looking at that frame I was uncomfortable with the thought of rolling a heavy bike into the back of it. I've seen some very questionable manufacturing issues also.
When I bought it and was speaking with the dealer about the construction he replied in a way that said "What do you expect for $xx,xxx dollars. I thought "Hmmmmm...." but true it was "cost effective". Still, you don't want it to fall apart like wet cardboard when the first good rain comes.
I'm holding out to see how the warranty work turns out. If I'm treated right we'll be ok. If not I'll do my part in warning people.