The 3 defenseman PP unit 'has worked'? By 'worked,' you can only mean hasn't given up a shorthanded goal against because I know you don't mean goals or even dangerous chances. Only 2 things look like a PP with that unit, the clock ticks down and they seem to try to get Lawson shots. Quite unfortunately, most of his shots are from as wide, weird angle and not dangerous a spot as one can find in the offensive zone. Defenders won't even come out at him because of how not dangerous a spot he stands in. Then, a number of his blasts have missed the net on the far side and wrapped around the boards and all the way down the ice.
I wouldn't call that unit 'working,' but maybe we're just arguing semantics.
That unit is certainly a Kevin Sneddon production. After several years of miserable PP units and schemes, this is what he has come up with. No room on a PP unit for Milo or Stacey, rather 3 defensemen with seeminlgy limited offensive instincts and abilities and 2 freshmen forwards.
So, rather than being a glass-half-empty kind of guy, I'll offer my suggestion. I would replace Lawson, just a junior, on that unit with the more experienced Patrick Cullity, a senior, and I'd put Jonathan Higgins in place of David Pacan. The rest I would leave alone, except I might replace Miller at the center point with Tobias Roos just to have 2 freshmen. The rest I would leave exactly as coach Sneddon has it.
While I'm not positive that would improve that unit's success, at least I can't be accused of not suggesting constructive alternatives.
