Well, Divegeester, I think I know what Dave is getting at. And here's the idea:
Suppose you enjoy playing chess with another person in real life, over a real board, and suppose you wanted to simulate that "feel" with this site.
Wouldn't it be nice if the board changed on your side right after the opponent clicked "Submit"??
That way you wouldn't be needlessly wasting time clicking "Refresh" a hundred times before he moves . . . . .
. . . . . . and you wouldn't be wasting time needlessly AFTER he moves by just just sitting there wondering if enough time has passed so you can try "Refresh" again.
That may not be a big deal to some, but I'm pretty sure it's very distracting to Dave.