What makes a skillful Dom 3 player?

[Micah]

I'd like to add in early expansion as a critical concept to master, though I agree with pretty much all of the above as well.

While I don't agree that EVERYTHING has a use, as per K's post, I was forced to eat my words on the utility of crumble and iron walls...normally they're still pretty bad, but in a VP situation they can be very much worth casting.