So, my idea is simple. I think there should be an option for game speed, to make things interesting. If we can solve our lag issues, we could have two new speeds of game movement. One would be like what we already have, but you have to make each move faster, like a lightning match. (So that each move had to be quicker, like speed chess) The other mode would be a slower countdown, but it wouldn't add time every time you made a move. (In other words, it would mean you could only make a limited number of moves)
These methods would allow a new degree of difficulty for the game by forcing us to think faster. Of course, we'd still have good old fashioned normal mode, but this would be for the people who wanted a little extra challenge.