This is a good thing, yes. But echoing previous points made, in RL some players do show a great deal of improvement early on. Using the amount of playing time a player gets should help fuel more rapid growth.
Also, it is unrealistic for a player to max out his potential completely in a key area of his position. Example, I have a center in D2 who his 90+ in rebounding, low post and shot blocking which he reached early in his SO year. He capped at about 66 in rebounding however, also in his early SO year. Now in his senior year he hasn't improved any further in the 2 years since. Even if I allocate 20 plus minutes to rebounding for him he doesn't improve above 66 in rebounding even over a 2 year period. That is very unrealistic IMO - particularly for a guy playing nearly 30 minutes a game.