This was rough. I chose not to prepare. Was going through so rough things in my personal life and it spilled into me not even caring about Sorcery and not very excited for GC. It wasn't great. I knew that I should have just played AoA - chances are I would've done much better even without practice.
Also, playtesting mostly involved playing against Joseph's Pathfinder site destruction build. There was a Saturday where he beat me 8 straight games in a row. I was incredulous and it was dejecting.
Another factor involved around the meta, with Archimago and Druid being the two most prominent decks. It just wasn't appealing to me then.
Irregardless of how I was feeling, I chose to not prepare, and I experienced the results, and I didn't like, and it didn't feel good.