Position Specific stats: Madden has been using a very outdated stat display system, which isn't terrible, just not to telling of how exactly a player is performing. I love NBA2Ks Metric stat system that shows players stats from a completely different view than your standard stat tracking system. The defense in Madden is really the side that gets short handed when it comes to stats, other than tackles/tackle assists/total tackles/tackles for loss/sack, nothing else is really able to be viewed, meaning a player with a lot of tackles in franchise mode makes it to the pro bowl just off tackle amount, and it's usually a team that has a bad offense. I would like to see meaningful stats, like defensive stops(tackles of 3 yards or less, pass break ups, catches/TDs allowed, QB hits/Pressures. Offensive Line is another position that doesn't get much attention with regards to stats. Ever notice how none of your OLine makes it to the Pro Bowl, even if he doesn't allow more than 3 sacks, Its because of one stat, Pancake blocks. That is the stat that determines a OLinemans significance in Madden, and during a Franchise season, you'll notice that the games you don't simulate, your Oline may have played great, but amassed no Pancake Blocks, even though you saw them putting defenders on their backs.
A Metric stat system would be perfect for Madden. How cool would it be to see how many yards are gained running between your LT and LG, how many yards are gained when the RG is pulling, or how many yards is gained when the FB is leading? A Metric stat system could show effective your blitzes were, who was effectively blitzing, how effective is your QB when blitzed. Madden supposedly has a behind-the-scenes type systemm that calculates some of the things I mentioned above, but see is believing.