U can’t bench Mahrez after a hat-trick, the guy is giving everything, he needs to be rewarded at some point.
And you can't abandon our current best 11 and formation in favour of a player who put three past a (on the day) poor championship side.
Mahrez has a lot of qualities... One on one he's the only player in the squad I 100% back to finish the chance other than haaland. But Bernardo is just flat out the better option up there in big games due to his pressing and link up play.