I think RTTS should be way more RPGish like other's have said. 2K has a great thing going in the beginning of their MyCareer modes, but even it gets stale and things stop happening.
I get that MLB is a much longer grind, so maybe not have something eventful for every single game, but make it feel more like an immersion than a simulation outside of the gameplay.
Then during the gameplay, there is so much they can do. Interactions with teammates/coaches, moments where your player is featured by the announcers/video boards. Etc.
Did you watch the stream about RTTS? They said they were going to have those things this year
I did not get to watch it unfortunately, do you believe it will be immersive?