Any chance of an undo button for those stupid misclicks (I meant to drag the board, not place the tile!) or accidentally turning the tile one too many times?

As a drawback, you could limit it to one or two uses a game and knock some points off your score as a penalty for using it.

Enjoying the game so far...it's always nice to have a game that I can play with the kids around!

I very much support this. Happens way too often that I place a tile in a wrong place or orientation.

Yes please, on my laptop misclicks often happens !