Having a directly elected executive branch often results in people electing Strong Leaders (tm) who run roughshod over parliaments. I think the experience in Europe over the last century is that this is a very bad thing. I'd much rather see a strong parliament controlling and balancing the executive branch. This, the formally strong but in practice very weak parliament I'd say is the biggest weakness of Swedish democracy, not the other way around.

And then we also have a very biased media, but I won't touch that issue here.

Peak oil is not an energy crisis. It is a liquid fuel crisis.