You have to pick one and stick to it until players adjust... But that means calling it the same in preseason game 3 and game 7 double overtime of the Stanley Cup finals.
You need to have a known consistent standard of what is and isn't a penalty no matter when it happens.
I subscribe to the "in game management and calling things differently at different times Is complete bullshit".
I don't care if they call things more tightly or more loosely, just always have it consistent.
I don't wanna see a team get called for a stick tap on the glove because that team is up 5-0 in preseason, but then won't call it when down 2-1 with a minute left in a playoff game because "the refs don't wanna decide the game"...but logic would dictate it's not the ref deciding the game. It's the player hitting the other player in the gloves with his stick that decided the game.