The project managers are doing their jobs correctly by de-prioritizing this. For the overwhelming majority of Madden's audience, Story Mode is a better bang-for-buck feature than toggling a roof open / shut.
Be reasonable and put on your thinking cap for a second. How many people in Madden's customer base would honestly care about having the ability or even use an open / close roof option? How many people
on this message board would even care about it beyond seeing it once, saying "oh, that's neat" and moving on to never touch it again?
In the grand scheme of things, the ability to open and close a stadium's retractible roof is not important to the game whatsoever. It's a cosmetic choice which has a very limited if any gameplay effect. If the list of potential new features in a given Madden year is 100 items long (it's not, but let's pretend), this is easily among the bottom five; it is purely a nice-to-have. Pretty much any single thing the project managers have their dev team work on instead of this is more important and is a better investment for the greatest number of people who play their game. It further will probably always be in the bottom five of this hypothetical list of 100 because just about any new idea a game designer could think up would be more a impactful addition to the game.
That is how decisions get made in video games the vast majority of the time - what can we do to make the game better for the greatest number of our buyers?
It's the same reason CPU v CPU options don't get much love in Madden. There are maybe like five people who do CPU v CPU (admittedly exaggerating for effect, but the number of people who play CPU v CPU is extremely small). Building any feature
specifically for CPU v CPU is not getting the most bang-for-buck out of the limited man-hours the dev team has available and is a disservice to the overwhelming majority of the game's audience. If you were in a PM position and didn't make the same decision, you'd be overruled at best and fired at worst.
Oh please, quit acting so self-important. Opening and closing a stadium's roof is
objectively nowhere close to being a necessary component to the experience of playing an NFL season online with up to 31 friends. It never was and still is not a blocker to anyone enjoying the core experience of franchise. The mode is plenty playable without this.