I've never seen a Shane Meadows movie.
I'm torn on Von Trier. Part of me respects that he can make movies I find so unsettling (early Harmony Korine did that too) and part of me just doesn't enjoy being unsettled. Melancholia was interesting, Dogville was outstanding, Antichrist was just disturbing, and I have a feeling I'm going to hate Nymphomaniac when I get around to it.
Six, in response to your point about Anderson maybe being past his prime... I think it's too soon to make that judgement. I don't think The Master was as good as Blood or Punch Drunk Love, but I've rushed to judgments about declining directors before.
Wes Anderson for instance: after Darjeeling, I figured the only interesting idea he had left was to apply his style to an animated movie and then he'd put himself out to pasture like Tim Burton. Then he came out with Moonrise Kingdom and Grand Budapest, which were both on par with his best films, IMO.