I agree whole heartedly that there aren't enough HED wheels out there. I love my tri-spokes and think they are one of the best multipurpose wheels out on the market for crit racing and track racing but agree that they are heavy and not really very safe or practical for daily training or touring rides.
HED also been keeping active by making rims for the new Bontrager Aeolus carbon wheel rims. Seems like Lance, Postal/Discovery management, and Trek management thought enough of them to outsource to.
I think its just a matter of insufficient marketing that more road riders, racers, weekend warrior types dont buy more HED. If HED were more agressive getting into mail order catalogs, it would probably get them a lot more exposure. Not to mention between the Alps, Stingers, and Jet wheels, they have a lot of the same functional wheel at a very similar price point. But hey - we're talking about HED now. That should help sell at least another set of Jets right?