If for some reason moving the information window wouldn't be practical, what I'm hearing is that players don't mind that it's there - it's only that you can't review your population and troops any other way.
How about adding that information to the economic summary - including what the current rate of incoming settlers is and what buffs might be active affecting that? Even perhaps troops currently queued? I would find having all that information in one area very useful and I think it would fit in with the other elements in the economic summary - just put it in it's own section.