Death by tank would've been nice. There was a movie about the Soviet invasion of Afghanistan that had a good example of death by tank. I think it was Beast of War (1988?).
And really, why are they complaining? I mean, there is no polite and easy way to kill a person (not that Saddam and co. deserved a quick death). Hanging probably is less painful than a massive heart attack.
You will get no arguement from me there. Personally, I dont care how they kill them just so long as it gets done. Hanging is as good as anything. Though an overdoes of kinectic energy is more exciting to watch.