Define training regimen priorities for boxers: you needn’t choose each week’s regimen when in training camp – boxers will follow the priorities you’ve setup previously.
Custom exhibition bouts: A sandbox mode outside of the main game where you can input entire boxer profiles and pit them against each other in exhibition matches – recreate classic fights on your terms.
Revamped coaching and training: hire specific coaches (the first of the various types of additional staff that you’ll be able to recruit) and assign them to boxers to grant gradual attribute improvements over time.
Addition of more types of gym staff: I’m not sure yet which will get introduced first, but on the shortlist are nutritionists, talent scouts, PR gurus, event promoters…
Rival gyms: see rankings of rival CPU gyms; where do you rank compared to your competitors? Will help to flesh out the game world.
Plotlines: Boxers will have ongoing feuds with their peers, journalists will write positive or disparaging articles about your recruits, and boxers will hurl insults at their forthcoming opponents to intimidate them during press conferences before fights. It’s all about adding more flavour to the game world.