I've finished the series.
Though it has some interesting ideas, I thought the execution, especially in the latter half of the series, was lacking and at times clunky. Never more so than during the climax. I know these large-scale shoot-outs are hard to do right but this one was especially silly.
Other western references I've noticed are "Will Penny" (a quite obvious one) and "The Naked Spur" (this one is more of a stretch but the choice of location for the final confrontation was very reminiscent of that movie).
I don't think it's necessarily a bad series, but it's best to keep your expectations reasonably in check. It follows a pretty straightforward revenge and redemption arc.
It is mostly well-acted though and the production values are quite good.