I wonder how drastic the changes will be if the Pens lose this round and lose the lottery.
Probably nothing drastic. I think it's most likely that JR attributes a loss to the Habs as being due to the break, with having to play against a rested Price and not having a chance to grow chemistry with the lines.
My expectations for an off-season after a Habs series loss while also losing the lottery is:
1. JR gives the 1st this year to Minnesota (a big mistake IMO)
2. Murray definitely gets moved, even if the loss isn't his fault. I completely expect Sullivan to go to Jarry if the Penguins lose another game against the Habs, regardless of how Murray plays.
3. JR probably tries to trade Johnson if he has more performances like he did yesterday
4. I think it's possible the Penguins move McCann and keep Bjugstad for next year, especially if McCann doesn't play well in this series. Have Bjugstad as the 3C and Blueger as the 4C for one year, and then let Bjugstad walk and have Blueger as your 3C and Lafferty as your 4C going forward.
I think the only big difference in the off-season would be that Murray is definitely gone (instead of just maybe gone) and guys like McCann are on the chopping block if they lose to the Habs. Otherwise, I don't expect anything major.