It is known that after 23yo players start to decrease their growth and I get it this means we should buy more players and keep the tokens flowing back in the market, blah blah blah. But seriously with some exceptions in real life players actually start to grow after they are 23 yo. Yes it is silly that we get so attached to some imaginary dots but we want to emulate real football as much as we can.
I always want to advocate about growth and performance going together in a player's development. If the player keeps doing better in terms of goals and receives good ratings then his growth should accelerate despite his age. If a players plays badly let him slow his growth I don't care, I have had my experience with a lot of fast trainers who have sucked despite their high ratings.
And this thing about hidden talent makes no sense, a 4 star player performs better than a 6 star, why not showing this in the overall rating. I have a lower rated academy ST myself that performs better than another one with One on One SA and many other examples over the seasons.
Please don't let this fall into deaf ears, did Milan sell Maldini or Kaka' after they became 23, did Barca sell Xavi and Iniesta because they sucked once they reached 25???