I enjoyed the first issue overall. Though I don't think Hill has found Cassandra's voice just quite yet.
Soy's art was fantastic, and he really should get a bigger book. Maybe Detective, I don't think his kinetic style would fit with Kings slog on Batman.
I also believe the misprounced Ra's Al Ghul in this issue too.
I don't plan on picking it up further, was just getting the first issue.