That is an alternative, but it has to wait for next hand to be effective to all tables when I am multi-tabling. Sometimes I need it to be effective immediately. If there is a hotkey for snap hide/show HUDs will be much better.
Another situation is when the game ends, HUDs still exist and make it difficult to view table info when I am choosing a new table to join, and since the game is end, there's no next hand to let the HUD changing be effective.
Thank you for the suggestion. I have forwarded it to our development department.