You'd miss exactly nothing.

I have tried several times over the years to pick up a game of theirs that looks interesting due to the story, setting, or due to the fact that it's a sport game my friends are playing.

Every single time, for well over a decade now, it's taken me about 20 minutes to realize they haven't changed one thing about their formula in any genre.

All of their games feel kind of cheap, floaty, and/or just "off" somehow in terms of physics and gameplay. They have nonstop in-game purchases, and they fill their game with hundreds of thousands of copy and paste quests. Like, the most tedious thing in the recent Zelda games is getting the Koroks seeds, and even that is more varied and interesting than the vast majority of Ubisoft quests.

If Ubi made smaller games less frequently, they'd be an amazing studio I'd bet.

The sports games from EA are also the same exact thing every single year. Similarly, if EA released fewer sports games, instead just updating rosters and stats through free downloads, they could probably make some pretty incredible games.

One thing I'd like to see EA do is add more fun and experimental features. First person mode in Madden where you play with a full team of guys, creative rule sets, totally off the wall fantasy settings and rule sets, career modes where you start as a high school player and get noticed, marathon games where you don't get to call plays and instead it's a constant stream of making it to the end zone and having to immediately punt the ball to the other team so they can start running and passing freely instantly, etc.

They could do so much to make sports interesting to non-spors guys. And someone who likes sports more could probably tell me some of the more realistic/simulation style upgrades they'd like to see from these games. Things that have been missing way too long.