I'm having the exact same dilemma with my 28 BHBE. The pantry is very deep and narrow, so getting to things in the back is a PITA.
My current plan is to fabricate some shallow drawers that are as deep as the cabinet, install some 1x1 or 1x2 in between the existing cabinet structure and use deep ball bearing drawer glides to attach them. I'll lose a little storage space, but hopefully not too much...
My trailer is in storage right now, so I'm still trying to figure out exactly how it'll work. I'm a little worried that the drawers won't clear the door coming out, but I think my doors swing wide enough to accommodate them. I won't get to work on this project for a while, but I'll post up pics of this and another mod I'm working on for the wardrobes whenever I can (probably close to Thanksgiving...
I think we would have trouble finding something like wire rack/drawers in this size. So rather than settle with something that might work, I'm just going to make something I like.
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!