The ones on stream (Haarp and NEH) were very unusual games. Against NEH I was digging frantically for a Corroder, and generally having everything go wrong in a terrible matchup. Against Haarp, I was just digging for tech or trying not to be in a position to die.
As far as Code Gate replacement goes, Faust doesn’t solve the Turing problem. It might be better as a replacement barrier breaker. I haven’t tested it; feel free to do so.