You have your hit and current cycle singles that stay.
Select ATS album tracks and "secondary singles" on rotation.
HT, Meteora, MTM album tracks on rotation.
And a few spots for a few special treats. Rarities, Reanimated songs, etc.
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The "average fan" gets their hits.
The hardcore fans get their album tracks and rarities.
Everyone goes home happy and waits and wonders what the next setlist will be instead of expecting the same list again.
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This set is only fresh because ATS songs are being played for the second or third time on a normal stage. In three years this setlist would be pretty meh .