Roundabouts are fun, on more than one ride I led we'd just hit the roundabout and keep circling around it until everyone had caught up.
Also there's a neat little documentary on a town in England that has no traffic signs and it actually improved traffic flow. roundabouts are pretty easy, the danger is ust people not used to the and not willing to try. the answer I don't think is "give up, people can't manage roundabouts" but rather build more and folks'll figure it out.