Interesting... our 2013 VTDP 3433 has drawers built into the dinette seats as well as lift off plywood tops.
I would think someone with even moderate woodworking tools & skills could DIY w/o too much trouble.
If you need / would like some pics let me know... PM if I don't catch a response here.
I have an older post in the Newmar section with several of the mods I've made to enhance storage. A Slidemaster slide in the 2nd pass side bay really helps storage & access efficiency.
Don & Marge
'13 Newmar Ventana 3433 - '14 CR-V TOAD
'03 Winnebago Adventurer 31Y - SOLD