Allow players to hide the remaining tiles board. I know some players who work out which letters their opponent has and then play accordingly
I'm curious if competitive players can do this in their heads.
My dad used to be able to do that in the Scrabble board game, from the second move (he was mostly right!), and when playing bridge or rummy or cribbage. It’s a maths/probability skill, you’ll never be able to stop it completely.