My wife never watches basketball, yet she fills out a bracket every year.
If you make it too complicated, the average fan (ones who only pay attention in March) won’t bother.
It won’t matter to me and you, the diehards, but my wife isn’t going to take the time to fill out a bracket every week of the tourney. She wants to fill out one bracket in about 5 minutes and then watch the games and hope she gets lucky.
And guess what, she won her office pool once.
I think that is the draw of March Madness, you don’t have to know anything, you can be a casual fan and still have a shot. And you don’t have to think much about it.
You complicate it, and people will lose interest.