yeah i made the changes in the relevant .txt files, I'll be honest it surprised me when it worked, I didn't think I would even have a functioning career mode, never mind all the sessions working as intended barring the ui obviously, it's not perfect, i'm not familiar with coding at all, just used years of tedious modding to try and work it out, was just a case of looking for any references to the numbers, I worked off the assumption that the game had a few maximum values, which I extended, I'm not sure though which effected what though, I wish I knew a bit more about what I was doing. In terms of teams, i just added two team's from the tier below, but I'd assume it may be possible to add more championships (and teams) too. To answer what needs to be added, just UI and references to expected finish, I imagine, but it could extend to relegation/promotion as mentioned by someone else. by default when you get asked where you think you'll finish it'll give you the choice of 8th and two 9's weirdly. You may have noticed in the frontend.txt file there are strings for 1st all the way to 99th, I know that's probably just to cover all the bases, it's interesting.