Thanks xxstewart. I had not considered the safety implication of the pedestal in a serious collision. I also own a 4x6' trailer which suffices in place of a pickup truck for most circumstances.
However the SUV is needed for hauling items that shouldn't be exposed to moisture, rain, road salt, etc. and aren't easily contained in a roof-top cargo container. Unfortunately, if the GX470 won't haul 66" or longer inside a protected environment then its utility for me fails and just becomes a 4wd minivan for me (and I don't carry > 1 passenger).
It looks like I'll be shifting my focus to a Toyota 4runner Limited for the fold flat seats in the cargo area. This is really disappointing as I was anticipating the capability of the GX470 4wd & wanted to keep the satisfying ride & interior comfort like I had with the RX300. :(