Like you, I got bored recently and tried HU (albeit at $10). Only have a few rounds under my belt, but it was fun. Like you said, you have to mix it up against the villain. In my limited experience, the opponents could be good or bad. Against the good ones, those who ALSO mixed it up and would push back with some regularity, I had a harder time and it usually came down to the cards.

I agree a HU addition to the forum might be interesting. Not only for HU games as you describe but for those situations in STT and MTTs where you are HU looking for the win.