Wow. Thats an interesting fact or point of view.
Guys, do you really want to say that for a given scenario like a flex T/O where V1 and Vr and V2 are a bit distanced from each other an increment in thrust could lead to a runway excursion cause of inability to hold the runway centerline during acceleration from V1 to V2??? That because force vectors or arm change during thrust increment?
I personally dont think so, but i am willing to believe. What i would ask next is: If youre doing a TOGA T/O and you get an engine failure at V1 you will be able to maintain centerline as long as your V1 was chosen properly. So if youre having a problem at lower thrust, you should still be able to advance thrust without losing centerline. Why should you lose it anyway? Only because of thrust change? Well, if the action is exagerated (is it the right word?) and thrust limits are exceeded, then maybe yes, but otherwise i dont believe that full rudder deflection or Nosewheel steering couldnt do the job.
Leo