I think a trailer does not need to be fancy at all, if fancy means cool paint, polished diamond plate and so forth. And a trailer does not have to be super stout either for most users. It is the guy that is near the GVWR limit that hauls often that can use a better built trailer. Like the Diamond C 48HDT is an I-beam construction trailer. Makes it lower and very strong. The 45HDT can be had at the same rating, and it is a pair of stacked channels. Also very strong, a few inches taller.
My first trailer years ago was so awesome. Why? because I didn't know any better, and truth be known it never let me down. It was a cheap angle iron frame, tandem axle with no brakes. I pulled it around and loaded it stupidly on occasion. And for that usage, it worked fine. I did not understand 25 years ago why the inner fender spot welds would always pop. I did not realize the frame was flexing that much. It worked, and worked fairly well and it was cheap. What I am saying is that these heavy duty very strong industrial grade trailers are not needed by many people. Especially occasional users. It doesn't take a lot of trailer to haul a 4000 lb tractor to the shop occasionally or to go help a buddy.