Agree with almost all of those., including Mount. That may be due to my expectations of him being too high, however.
I would perhaps disagree with your assessment of Wisdom's signing being 'awful'. Not worth the money though. When fit, I would argue Marriott has massively overperformed. If he gets a good pre-season, I can see him bagging 20 next season. I would also suggest that Curtis Davies surpassed all of our expectations last season and was our best player. I'd probably put Roos as slightly overperforming based on this season.