I've been in the process of modding my LED, and the first 'major' mod was the Scenario Dreams, Universial T-Board. It's nice to have all the current firing modes, as well as having converted the Angel to 9volt.
Speaking of 9volts, not all 9volts are made equal. Cheaper knock-off 9volts can be a bit bigger than your Duracell or Energizer 9volt. The space inside the LED is limited. Very limited. So limited, that the size of your 9volt will matter. Although, you could of course shave some metal from inside the grip frame if needed to be, but I'm pretty limited on the tools that I have on hand.
Here's a picture of what she looks like so far... Pictures added of inside grip frame. Doesn't show much..
Let me know what you guys think.