Hello,
just come back from holiday so maybe not at 100% yet :), but in the Annotate Profile command>Can Alignment you can check Rate of Deficiency.
Isn't it what you need ?
For plan annotation I don't think it is possible. Maybe something to add in View Geometry>Stationing: cant. If you want it there, or in another way, you should fill an enhancement request on selectservices with a drawing attached to show exactly what you need.
Best Regards
JPLN