1 - Making video games is hard. Especially in AAA.
2 - Specific to Madden, Madden is a massive game with a lot of cooks in the kitchen; not only developers and designers and the layer-cake code base with a mix of new and legacy tech, but licensing partners, marketing, corporate, and so on. Any decision about any feature add is planned months if not years in advance most of the time.
A designer-type friend once told me that working on Madden was akin to steering an aircraft carrier. The thing is capable of turning and will turn when asked. However, it takes a lot of people to start turning, and once you start turning you're not stopping, so you better be damn sure you want to turn before you do, otherwise you're going to run other things over and make a mess.