Yeah, seems like GM went the soccer mom route w/the H2 and that has bled over to the H3. It sucks for aftermarket parts - try finding an aftermarket winch bumper?? yeah, for the 1st year or two there was nothing but homebrew stuff. It's getting a little better, but there's still only about 3 or 4 major manufacturers. 90% of aftermarket is chrome, yuck! And because it's a hummer, everything is ridiculously overpriced - nevermind that my brother's '07 1500 was $5k more than my H3, he can still get a winch bumper for 1/2 the price it costs me
And if you look at the recent union contracts & talk on Hummer forums, there is plan for a diesel in the H2, but no plans whatsoever in the H3. With the new Alpha (V8, cast iron front dif), that's gonna hit 99% of the H3 market. Hearing about some of the design issues with fitting the V8, and the small market for diesel, it's probably not worth the effort for GM. Bummer