Simplifying Combat Math Proposal

Adding to the discussion about simplifying combat math, I tend not to play cards like Burrowguard Mentor ("power and toughness are each equal to the number of creatures you control") because they often end up dying after combat when my other creatures die. Have you ever considered making a similar card but with "CARDNAME'S power and toughness are each equal to the greatest number of creatures you have controlled this turn."? That would make things a little easier on my already over-taxed brain.

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I think the more likely version of that would be an activated ability that gets the boost until end of turn. A static ability that has built in memory needs can also cause issues.