I figured it was some kind of antenna but had not noticed one stock. Dad's 2004 tree still uses the automatic extending antenna on the passenger's side front fender. Generally works fine but like the rear hatch release prone to stop working and expensive to fix.
Yup platform makes sense. That is what I've used in the Tacoma for 20+ years. in the 4Runner my drawer system is ~12 1/2" tall and in the 4 Runner that makes for tight sleeping headroom. (I can't fully sit up and getting in and out can pose a challenge w/o the truck tailgate to work from.) I'd not considered this when doing my design since I was focused on the storage aspect and the sleeping platform was secondary. I know the Sequoia is a bit taller so I'd suggest put in a couple of milk crates/apple boxes and a stack up some plywood to 13" then see how comfortable it is for you at that height.
On the storage side I find that I wish my 2nd drawer was a split height since the big deep drawer tends to lose all of the smaller camping/recovery items. I understood this when I was building and did not want to add the extra 30lbs the 2nd drawer would have added to the existing 150lbs of my plywood setup. So working on a light weight tray setup for the rig now to resolve this.
Boort
