No Fly Zone asked:
In a crunch, perhaps an engine failure after Vr, can the pilot get a little more?
A very bad idea, because of Vmca (or Vmcg, pre-rotation). The thought of returning to earth flying sideways holds no appeal to me.
If using REDUCED thrust, via ATM, as opposed to DERATE, then all is well, because Vmc's have been calculated based upon the rated thrust per the rating plug.