MAC, you have to remember the H1 was designed with military use in mind only.
As long as it does what it was intened to do for the original buyer I doubt they will do anything to it to make it more civilianized. That would defeat its military use.
I agree with what Zaging said, they did improve on the H1, its called the H2!
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'03 Hummer H2 Adv./Lux. Pkgs. Sunset Orange W/Sunroof
Air Spring Susp. Pkg. + 3rd. row seat & DVD System.
CompuStar Auto Security/Remote Starter.
http://www.haugens.com