That's awesome. I'm glad manufacturers are moving into this space. Unfortunately for me for now, 60" cab-axle won't work. Seems like most people like the long cab, short bed combo but hopefully there will be options for everyone eventually.To throw another wrench into this conundrum. Overland explorer is coming out with an HD tray which will apparently allow for full utilization of trucks payload (actual numbers TBD), no 3k lb limit.
After a lot more calling and emailing every every manufacturer mentioned in this thread plus one or two others, I decided there really isn't anything on the market that's close enough to what I want, so I'm going to give my money to Bowen Customs and see what he can do. Specific details are still scarce and most of it is going to be mix-and-match features out of products he's already selling (i.e. probably nothing completely custom and unique) but I think the design I'll end up with involves a full-length flatbed with Bowen Customs' standard-style under-deck toolboxes, tie-down tracks in the deck, long drawer slide in the back, and a removable cab-height storage box at the forward end of the bed (similar to what Taylosha posted, only mine will be fully above deck-height). I'm going to go with drop sides and a drop tailgate to enclose the area under the slide-in camper's "wings", but I won't get the enclosed boxes like Aluma Tray and others sell. This approach will mostly be to improve the functionality of the open truck bed when the camper's off, and definitely also to help keep costs a little more reasonable. We're going to retain as many of the original sensors as possible, although I'm not sure exactly what that will look like yet. Rough estimate is this will be coming together in ~5 months. It probably goes without saying that I'm extremely excited to see this start to come together!