Yes, I would like to soon provide the ability to modify player names, their characteristics, edit clubs, and take control of any club at any time. That will come someday! For now, I am trying to stabilize the game in areas I'm not very satisfied with (such as financial evolution) and continue to develop some cool features. However, a sandbox mode is indeed planned for the medium term!
Thanks for the live matches, it's just text but I find it more exciting to discover your result minute by minute like that.