There are a number of things I really like about your trailer. The spare axle and parts is a big necessity to me. I like the built in gas tank and the recessed D rings.
The only thing I would do differently is not have drive over fenders like that. I prefer a flat bed over the fenders. Winching/dragging an A arm over a trailer fender is not fun.
It was the 06, 1000 we were just before Puerto Escondido, I was the last guy in the caravan, the truck was a new Chevy with 4 wheel steer in front of me towing a huge enclosed low profile full of bikes and quads. Semi coming the other way, I saw and the other driver saw and he pinned it, I backed off, he just cleared the bridge when they passed each other, the wall of air just pushed the trailer off the road and was now crabbing down the lip on the edge of the road, rear steer made a tug and it jumped back on the road and bounced a couple of times, by then he was off the gas. There was no way he would have survived if it had it not been low center, there wouldn't have been any thing left for a yard sale.Its a matter of choice. We build both but this keeps a lower center of gravity.
I seen the tongue's crack on a couple of yiros a few years back and i was looking at a nice 32' vimetal trailer last week that was built last year and the gussets on the tongue had been rewelded because of cracking, they use 6 inch tubing and probably to thin of wall for the size of the trailer, where diamond c and carson use 8 inch.Diamond C was running an add on RDC for a long time as well. I liked how they ran the frame the tongue is attached to all the way to the axels compared to Yiro stopping at the full width of the chassis. Please let me know if you guys think that makes a difference at all.
And across the board really. I've recently been quoted by local dealers of about 4 months from PJ and about 6 months from Diamond C.