For changing the terminal names, I think it will only affect 2E. At the time 2E was planned with the 2 satellites (S1 & S2), the original idea was not to name the 3 concourses K, L and M but to number gates like this (or something similar):
- current hall K : gates 100 to 130
- current hall L : gates 200 to 230
- current hall M : gates 300 to 330
But, I believe the most urgent would be to stop this check-in of some non-schengen flights at 2F or at least stop to display 2F for the departing terminal for connecting pax. This is super confusing for most pax.