AI UNITS (Aircraft especially) make too violent a turn or change of altitude when following waypoints. Etven if you place lots of waypoints close together with small changes between them, the AI does max deflection at each one.

[TEMPEST.114]

This makes it very difficult and unnecessarily challenging when using AI units for PLAYERS to FOLLOW in close formation. 

Some option for specifying the MAX RATE of the turns at waypoints AND MAX FPM for change in altitude at waypoints would massively alleviate this problem.

So too for change of speed, although this is less of an issue with good formation flying techniques.

Thanks