I just don't think that is going to the case (the fatigue part). This has happened in years past (especially in 2022 & 2023) and they didn't wear down until the later rounds, which is a benefit to other teams more so than the Kings.
Games 5, 6, 7 the last 3 years.
McDavid -
6 GP - 4G, 10A, 14Pts
Draisaitl
6GP, 6G, 3A, 9Pts
Also, if Hiller is going lean heavily on only 4 defenseman, there are going to be fatigue concerns for the Kings too, specifically with 35 year old Doughty. I'm ok with shortening the forward lines, a lot of teams do it, but they are playing with fire with the D usage if it's the same as it was Game 1.