The biggest and most annoying problem I find for hard techno (and it ties in with Sash's last post) is the programming of nights by promoters, and the amount of DJs who still don't believe in variety.
Now, if you start your set basically the same way you're going to finish it too, you are just going the bore everyone and make people see hard techno in a very bad light. A lot of people ridicule hard techno for being all boom boom, and dismiss the whole lot... and that sickens me, particularly when I know they are judging most of their opinions on DJs they've seen that don't have the ability to be 'diverse', or who play just one narrow style of hard techno for the whole set.
If you can bounce around from style to style, by the time you get into fearsome hard techno territory it's going to sound *much* better. It stands to reason. A night of drilling techno for four or five hours or m ore, does so much damage to this music in the long run. More people should cop onto this fact.