Who is 'reliable' in the guard's rotation? Love Simms, he seems to be coming on his own, but he's far from the model of consistency. Patty can be great or really ugly. Tony I think meshes better with Pau, and he already plays quite a bit of minutes.
I agree about the leash, but 20 mins isn't even half the game. He's averaging 19-something mins this season, lowest in his career. He basically has ~15 mins to make any kind of impact. Defensively, after Green, he's our 2nd best defender at the SG/PG position, at 39 years old. FWIW, he's been benched at the end of playoff games since the Clippers series two seasons ago, so he's not untouchable either.
The reality is that this team is built in a different way. It's gong to be LMA/Kawhi taking us somewhere or nowhere. You get what you can from the rest.