Well, this may seem simple compared to the other requests. Also, I'm still learning the game and my manual is in a language I don't really understand as I'm living abroad (well, from my normal country), so I hope it is not already included and just hiding from me
Every season when the game updates and creates new players and such, I'd like to be given the option to either activate or deactivate leagues.
Take my current game. For some reason I forgot to switch on lower English leagues. I'd like to get them made active so I can manage there as well.
Alternatively, if the game is slow, then people could deactivate some leagues and continue their current game at a higher speed. I think that'd be quite useful.