Thank you Old Smokey for the answer.
Thatīs what I thought: it doesnīt make any sense to reduce the V1 on a long runway.
And in fact it was the idea of a bright person, but they will change it pretty soon again to V1=Vr on the long runways, since other pilots are also asking for the reason.
Ok but one is still not really clear, I understand if V1=Vr it can be a balanced T/O or unbalanced. (but depending on what??, stop perfomance Runway condition wind,...)
And if there is a split between V1 and Vr can it also be a balanced T/O, when we talk about the same aircraft (Dornier 328)??
I guess not?? Then the ASD is shorter then the TOD. (we only used to have the split on very short Runways)
Thank you!