Hey, i think the original version is great, but i made some changes. The “TicTacToe” board consists of 3x3 positions/9. So i thought it might be useful to add at least 6 symbols (x and o) per color.
And color is a good point, i just changed the color at 4mm, so this is a good way to select which team you're in.:

The inner Xes were redrawn, so they correspond to the round “O”-shape. Fusion 360 file will be provided, too.

Additionally i changed the Lid colorization: