This mini is really good, especially is you like Grell's Green Arrow; it spins right out of that books events and has the same feel/aesthetic.
This follow-up "ongoing" only lasted 12 issues, and was hit or miss. The first arc or so felt very much like the preceding mini, but then... something happened. It went off the rails around the last 4 or 5 issues.
The 2021 BC Appreciation thread had more extensive discussion about these books, if you're interested in tracking it down.