Originally Posted by
+TSRA
Some flight planning programs do spit out the TORR and TODR. While this doesn't tell you about V1, it does give you some idea of when you should be airborne or when you should start to be concerned that you might not become airborne. Regardless, I agree with you that having this displayed to us in the flight deck as some form of indication on the PFD is a no-brainer. Surely it has to be more simple than the programing required in a ROPS.
They are useful to a point. If you don't have the required acceleration for any reason, then those numbers are also useless.