Yeah, Scott Ryan said it was time to put Ray away. He didn’t categorically rule out a return, but it seemed unlikely. You may like Rake, also Australian and set in Sydney. It has a stellar cast, too. Lost the plot a bit in season 5, but the first 4 were great.
haven't watched many of these but Jack Irish with Guy Pearce, Aaron Pedersen and a bunch of other easily recognisable character actors seems OK too... ex-lawyer turned PI/debt collector (Pearce) solves cases, mostly set in Fitzroy!