If we had a Gudas-type guy at RD on the third pairing and PK, I would be inclined for Luke to be a regular over Bahl. But just by the makeup of our defense, I don’t think Luke gets minutes unless injuries strike or he comes out and looks dominant. Where does he play?
Marino is the best partner stylistically from the RD. But you don’t break up Graves - Marino that has been our matchup pairing all year. Even that’s a stretch as Marino is good positionally and in transition defense, but a Hughes - Marino pairing would get abused in their own zone physically.
The other two pairings will have either Severson or Hamilton. Luke adds little value with one of them. Maybe you can look to have a super sheltered Hughes - Severson pairing for offense, but I would be terrified of that come playoff time. Much rather see Siegenthaler/Bahl with Severson.
Seven D is an option, but that never seems to work well in practice. Only makes sense if one of the 7 is a special teams specialist, but with Hamilton on PP1, you don’t play Luke just for PP2 minutes.
The only other option would be to play Luke instead of Severson. I just can’t see a scenario where Luke is an improvement over Severson. I’d much rather trust Severson there then risk Luke making mistakes, not to mention now you’re playing someone on their off-side.