No, Jim Ross has really not been that good for awhile. WWE was right to cut him when they did. Jerry Lawler also hasnt been good for awhile. JR and The King were top quality as a team in their prime, but without each other, and this stage in their lives, they are a fraction of what they used to be.
I really think Conrad Thompson would be a great fit as a commentator. He has had tremendous podcast success, and would be a great familiar voice for wrestling fans who is young, fresh, but still knows a lot about the wrestling business. Conrad Thompson could easily be AEW's equivalent to Joe Rogan for UFC.