I didn't play at Oregon State but I did deck check and made a few rulings.  What little I can remember probably doesn't give too much insight.  Offenses I recall: prophets, CTB, IA+FBTN WC, priests.  Defenses I recall: Babylonians, orange+SSoS, Assyrians, Syrians.  Of those, offensive metagames obviously centered around CTB, play first, FBTN banding and pre-block CBN immunity.  Curiously I don't recall seeing any pre-block ignore.