Nice,
I like the modular approach... I have pondered the problem of how to carry a large amount of gear on foot... Cause I can't believe my car is an asset once gas is hard to get. On road or reasonably smooth trail I am thinking bike / trailer-kid carrier combo or a big game hauler. Snow is ski/sled time, but I don't get to play in snow very often anymore <img src="/images/graemlins/frown.gif" alt="" />
In any event, man you gotta be pretty fit to pull a game hauler / ride a bike / skin a sled full of crap up a hill. It'll kick your butt in short order. You need back up / relief players if you have a full load. For one man ops, it's a pack or nothing.. You will sacrifice too much mobility with anything else... IMHO.