Well, if there was a decent Honda made suspension upgrade such as a lift kit and coil shocks and skid plates, I would consider some combination of those for my Pilot. It would make even more sense on a Passport.
Now, imagine you are buying a new car and you have a trim you can chose that would give you extra 2-3 inches, AT tires, skid plates, better approach/departure angles from different bumpers, offroad tuned shocks, etc? Honda's AWD is very, very capable. 8 inches of clearance on Passport is lacking a bit. Make 10 inch standard and add some beefed up parts. And no, 4Runner is not going to replace Pilot/Passport in its current incarnation. I am still getting 27 mpg on a hwy after 2 inch lift, AT tires +1 inch in size (approximately 10 inch ground clearance) and I can go most places 4Runner can go.