Will it make any difference to how the AI plays? Maybe the demo has been programmed to play to three overs, so no matter how many overs an expander adds, it'll still play the same.
And since we're in the file formats section, may I ask if it's likely we can do anything about the bounce/speed of outfield/speed of ball, especially off edges? Or will we have to rely on Transmission for a patch to fix that lot (as well as the AI's running, of course). It doesn't do the game any favours that the ball is speeding to the boundary and then stops as though it's just entered a muddy patch or something.