I'd love a stretched, 4 real door FJC. Make sure it has high-tech 4wd like the 4Runner. Have some type of removable top similar to the 1st gen 4Runner. Offer a V8 version and keep the V6/V8 tow ratings similar to what they are... I love the retro, tough look of the FJ.
I'd by one tomorrow!
GM has made some very interesting strides with hybrid tech lately too. I'd consider a truck-tough hybrid. (I know Toyota knows hybrid but GM's setup is all about towing etc...)