the higher the GPA the more likely the player is to eventually qualify.
I'd guess the lower end (2.2) may have a 20% chance of qualifying. 2.4 may have a 40%, 2.6 60%, 2.8 80%.
Overall, I'd estimate that about half of the ineligibles will qualify by the season rollover.
think of it as similar to the Big Board for the likelihood of being drafted. Likely staying, on the fence....