I don't think any parties here support direct democracy. Either way, I'm very strongly opposed to it. Aside from a few simple subjects, people aren't capable of deciding what's good for them, since most issues are way too complicated. For instance, a poll was held here recently, that showed that most people want to retire earlier. But no one wants to pay for it.
Well, but the alternative is currently representative democracy. You are saying that these politicians are understanding these issues better. With all I see from politicians I cannot agree. And in Switzerland and the US direct democracy is working well enough.