2009 World Championship for Heroes IV Online.

No one is suggesting such trash, though :) I'm also against straightforward rush maps!

Really? The guys from France want to play Eldorado. I respect Teacher a lot, but on this map, he was clearly taking it easy – it's either a pure rush or an incredibly slow game with a buggy Castle Building Option.
And in general, it's a very delicate issue. For example, I think that Iron Man, ZmineZ, After the Flood, Spellcasters are trash. But many think otherwise.

Dim, there aren't that many options :( So, what would you suggest for the World Championship?

There really aren't many options. That's why the commission is needed – to choose the most playable one from everything that is suggested.
I would suggest PS, Circle 2.0, Bizarro, Lezkandra, Plains of Despair 1.6, If these walls (debatable, but possible), Spleen, Will and Reason, Showdown (even though I don't like it).