It would be helpful if we have a way to put a marker on empty squares in the grid which are only visible to the player (not opponents). This could serve as a reminder as to what color the player is intending to put in that empty spot.
If possible, this should be an optional customization that is disabled by default (so as not to confuse new players)
If possible, this should be an optional customization that is disabled by default (so as not to confuse new players)