Thanks for the reply, and sorry about the delay in getting back you. Virtually anything that requires the mouse pointer or mouse wheel is basically impossible. Moving the mouse wheel to zoom, and edge scrolling is completely out of the question. Anything that requires a right click is also quite painful, as it becomes touch-and-hold, and it isn't always recognised.
The lack of gesture support, such as pinch to zoom and swipe to scroll, is a good example of what I'm meaning. The game was built around a mouse, so it's entirely understandable. However, I played Civ V's touch friendly mode, and it's night-and-day difference. I actually enjoy this more, and I guess I was just hoping it might happen one day. I understand if it doesn't, of course. Isn't exactly a major market.