He's not irrelevant. Right now we have guys like Mudiay and JC playing huge roles... those guys may not be able to create and play as well or as much in the playoffs... specifically after the first round. Conley's creation could be big at that point. He has been a gamer in the playoffs in previous years and I think he can get better this year... many of our guys struggled out of the gate.
I still think it would make sense to bring him off the bench... DM is an elite pick and roll guy, Ingles in an elite pick and roll guy, Mike has been in years past. I think defensively it just makes sense to start bigger and maybe close with the Conley, DM, Ingles, Bojan, Rudy lineup. The LA teams pose some matchup issues.
I wonder if we could use his salary better given what we currently know about the roster... the best thing for the team is for him to get back and play well.