I never submitted a bracket, partially because I didn't follow the schools this year, partially because I didn't want to get spammed by Quicken - you give a cell number voluntarily to them, now you have a "relationship" where they can call you.
Two random rants as a starting point for discussion.
1) I hate the "bigger than the group of 64" games. You can't even call them play-in games if you have two 11 seeds going at it - they don't need to "play" into the tournament as much as they'd push someone else out.
There used to be some poetry in "63 teams lose their last game, one team goes 6-0 and wins the championship". The current "67 teams lose their last game, one team goes 6-0 and wins the championship, well unless they were a play-in school and they need to go 7-0" is a but more unwieldy.
2) There's so much money generated by the games now, and the players get nothing. I'm not a lawyer, but I'm sure a player filling out a bracket would run afoul of NCAA rules and would have their eligibility threatened. And now there's talk of forcing players to play yet another year at college before going to the pros, delaying by another year when a player can get compensated for the skills that so many are willing to pay for. A good part of this is pressure from the NBA to get more mature players of predictable NBA skill level. I'm not sure that having millionaire/billionaire owners offload their uncertainty onto 18/19 year old freshman/sophomores is all that fair.