From Top Eleven support page (LINK):
Is Top Eleven free to play?
While Top Eleven is free to play, we do offer the option to purchase in-game currency (Tokens) for real money. You can make these purchases through the game itself. These purchases are handled entirely by the iTunes Store and Google Play in order to ensure maximum safety of your personal and financial information.
It is very important for us to give our players the ability to choose how they would like to play the game – so every area of the game is equally accessible to players as they level up, regardless of whether they invest real money into it or not.
Wait ... what? "so every area of the game is equally accessible to players as they level up, regardless of whether they invest real money into it or not."
This is not true at all, people normally do not have access anymore to create mutants, unless they go thru a very long process which involves cheating after all. This is available from 2016 since they changed the training system and wouldn't be fixed anytime sooner and the reason I am saying anytime sooner is because in theory the fix wouldn't be fully visible until 2020.
Short-long-story, at the moment I can create a full team of 18 years old players, all mutants and start tanking for approx. 14-16 seasons, making me able to full enjoy the benefits of Mutants until February, March 2020 if the fix for creating mutants would come now, today, these minutes! ... but this if is far away probably.
Short-long-story, you can play with a huge disadvantage in League against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in Cup against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in Champions League against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in Super Cup against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in Associations against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in Friendly games against mutants until 2020!
Short-long-story, you can play with a huge disadvantage in different Challenges against mutants until 2020!
Short-long-story, you have a huge disadvantage when it comes to complete different Challenges against teams who have mutants until 2020!
No matter what you do until 2020, no matter who you are, until 2020 you will play the game with a huge disadvantage and this is the sad reality!
..... unless Top Eleven decide to finally come with a permanent fix on creating mutants but also recalibrate (reshuffle, reassign) mutants attributes to the same quality / level that's accessible to all of us, according to the "rules".
Should Top Eleven developers reassign these extra skill points from X and Y attributes and create realistic players? ... or should we wait until 2020, 2021, etc?