Thad: Right now you can make the same invitation up to 9 times at once - there's a "number of games" option just below the time settings and above the number of games in match option.

As to a game template, I think that it would be useful (and more or less easily implementable) at least when challenging someone for a rematch (when you get a message with the outcome of the game and then have the option to send a game invitation for the same person)