Not exactly following this Thornton usage logic by Keefe.
He plays Jumbo Joe on the wing with Matthews and Marner to start games, but when Leafs fall behind he reduces Thornton's role and replaces him on that line with Hyman.
Thornton can't skate with Auston and Mitch and slows the overall line and attack down, and when it really needs to produce he is removed and TOI/g limited.
Why not simply play Hyman on that #1 line, and play Joe on the 3rd line C position regularly with Kerfoot and Mikheyev, and on occasion toss Joe out there with AM and MM to mix things up. This seems backwards to me how it currently is being deployed. IMO
At his age Joe is no longer a full time player nor #1 line material, but being played as one with less than optimal results.