From the blog;
"My Team & Career Improvements
We have made a number of changes under the hood to further improve your experience in the popular My Team, Career, and Two-Player Career modes, that give you the opportunity to create your own Formula 1® legacy as one of your favourite real-world teams or as the 11th pair on the grid. To start, we have updated the ratings and acclaim of all drivers, better reflecting their real-world performances. This goes for those currently competing in Formula 1® and Formula 2™, as well as the racing greats known as the My Team Icons. Speaking of Icons, 7 drivers will return from previous games, and we have added 8 new faces to the game too. 1992 World Champion Nigel Mansell, Japanese sensation Kamui Kobayashi and the ever-exciting Pastor Maldonado are ready to join your team on their journey to the top. Plus, 3-time W-Series champion Jamie Chadwick joins the roster. For those that pre-order, four drivers from Braking Point past and present: Devon Butler, Aiden Jackson, Casper Akkerman and Callie Maye will also be available. Each of these new Icons are exclusive to the Champions Edition of F1® 23. Looking at your team and facilities, we’ve made a number of balance changes across the board to provide a more authentic Formula 1® experience. The starting facilities of the current teams have been updated to better reflect their real-world standings. Also, the costs of upgrading facilities in general have been refined, as have contract costs too. In addition, both primary and secondary sponsor payouts have been adjusted. Along with these balance changes, thanks to feedback from the community, there have been multiple stability improvements made across each of these modes. On top of all this, we have made several additions to the in-game presentation including cutscenes featuring Natalie Pinkham, a variety of voice lines from race engineer Marc Priestley, and race introductions from David Croft and Alex Jacques. All of the changes that are reflected in other areas of the game, such as the option to choose 35% race distance, red flags, and the inclusion of Las Vegas and Qatar races are all included in My Team and Career."
Minimal changes to the mode really
"My Team and Career modes continue to be an important part of the F1® game series and we can't wait to hear about the stories you create along your journey in F1® 23."
Look at the changes and make of that what you will.
https://www.ea.com/games/f1/f1-23/news/f1-23-more-features?isLocalized=true