Shumpert messed his shoulder up the last game so you know he is not a 100%. Deli is practically killing himself out there. You don't think inserting him for a few minutes wouldn't help these guys rest? I'm not saying he is going to shut anybody down but he can be effective.
He sucks man, James Jones ability to shoot means he should get any/all available minutes over Marion
Cavs defense has been stellar, they need more offense/shooting alongside Bron if anything
Marion is completely useless on offense, and doesnt have the same lateral movement to even be a great defender
Its not like the Warriors have a big wing who is killing, and Marion cant check Curry, so I really dont see the point of him being out there