Risk

I'm going to be working on a Risk-like game that I'm going to call "I Rule the World."

Right now, it looks like it's going to be an amalgam of technologies. I plan on using jQuery (Javascript library), PHP (probably a little bit of it), MySQL, and Twisted Python (haven't used Twisted Python yet, so we'll see what that's like. I've wanted to create comet apps, so this will be an excursion for me).
Game play, for the most part, should be like Risk. Eventually, other than the plain-old Risk board, I want to build in a "map creator" where you can take an image and build a map out of it.
Other ideas I've had for it:

• Saved games will be based off a [primary] user's email, and other people he/she plays with, and also have an optional password
• Creating a game will basically be putting in a primary user's email address and an optional password
• It'll only bother you when it's your turn. Any defensive rolls will automatically be made for you, unless you want it to bug you for these as well
  • Defensive roll thresholds Understandably, people will want "finer" control of their defensive rolls. An offensive roll of 6-6-6 will have very little chance of failing, so the defender will only want to roll one die to minimize loses. Thresholds will allow those who want minimize manual action, as well as loses, to set a threshold for each die.

Any ideas for more features?