After playing a fair amount of the PSP version of the game I think I know what I'm missing the most from the version I play on my Mac: the complete freedom on tactics.

As far as I can see on the PSP you're limited to the "stock" tactics. While this is fine for the pick-up and playability which I know SI was gunning for and have achieved I'd just like to have that little more control.

I know it's far too early to talk about future versions but I would say this would be the one thing I'd like to see improved for the next version if there is on.