(d) speeds have to be consistent with an analysis. .. so, for instance, you can't pick this V1 and mix it with that VR and V2. Otherwise, you pick one according to you preferences.
Although to me sometimes it would seem to be a sensible thing to do.
I've mentioned this before with respect to PRG.
Your Improved Climb speeds have a V1 about 20kts higher than the V1 for normal performance at the same weight.
For the purposes of an RTO, a TO may be rejected safely at any time prior to the highest V1 of the two cases above.
Yet, in the case of a normal performance TO (as opposed to improved climb TO), the brief I receive often constrains me to continue with a TO after the lowest V1.
This is somewhat contrived,
AFAIK, because, we, as pilots are not trusted to mix the two together.
Neverthless, accelerating at 3kt/sec, it would allow me another 5/6/7 secs of time to decide whether to RTO.
Of course, in a normal performance TO, we would probably be airborne by then but in principle...