I would to see a better interaction between players and ourselves. We have that in a way in the half-time/post-match team talk but how about instead of the sliders an individual set of options which is in context to the situation.
For example for a wide midfielder on a 4-4-2 - a drop down/tick box menu with the options to ask him to push up, back up your full back, go wider, go narrower, take on the full back. etc. How well the player does that depends on his stats. I know some people would say that's what the sliders are for but where is the option for the left winger to double up on the opponents right winger and then still be effective in attack - what would be the correct settings on the sliders. Make it more user friendly and make you feel you are actually barking out orders than adjusting toolbars.
Also have results determined by overall team ability rather than if you have sucessfully countered your opponents tactics. As Fulham for example I can beat Man Utd, Chelsea at home by getting the tactics right but lose to a non-league side with my first choice XI if I don't have the sliders in the wrong position? In today's football quality signings should be important.