With the addition of the trainer a couple of years ago, it is a lot easier to transition from Assisted to Manual.
Being able to see where you're aiming your passes and shots, helps a lot more with muscle memory.
I know this has been debated thousands of times, but if we want the game to really improve and have it be, truly competitive, try to transition, turn on the trainer for a day or two and you will be ready to go, it does not take long to get use to it with the trainer activated.
In my opinion the difficulty settings should be tied to the controls and to RIVALS and the Weekend League.
Amateur - Assisted
World Class - Manual
RIVALS and the Weekend League, should be locked to manual controls. If these types of changes take place, the game will be considered a more serious E-sports game.