The lights are pretty expensive. In and of itself, that's OK, because quality costs. But at that price level, how much more would it have cost to have nice housings? Not much, I'd guess. Having shaped beams would have increased the price significantly.

It looks like these lights fill a niche. I kind of wish I had them myself, but I'm not willing to plunk down that much on them. I'm glad they serve you well. I know once you spend the money, you don't regret it, since they'll probably last pretty well. One unexpected consequence of dynamo lighting is that the lights are bolted on the bike, which generally means they are more durable.