OS,
I am
VERY clear on the implications of TOGA power being (mis)used post a V1 cut especially with low weights and thus low Vmca. You hit TOGA,the BRT's churn out max un-derated thrust @ 115k a piece! And then the issues of low flight regime controllibility etc etc(I was personally involved with the removal of some very 'set' ideas WRT usage of TOGA post V1 cut).
That's a taken.
So's the fact that one would be have to be very circumscept in its use at especially low weights and as such constitutes additional briefing(at the very least) IF and WHEN TOGA would be used post EF on T/O roll in very low weights...ie obstacles,windshear etc etc.
That said,I completely agree with John.T in that a derate is tantamount to an engine change with a lower max power.Therefore,firewalling the engines
ON TAKE OFF ROLL,having used assumed temp+derate would only give me max
derate power...
Which gets me back to my original question ..

PS-Just to keep u in perspective..errm,I am not a '7-8 year RHS flown FO with little understanding of the t7'. Am just doing some brainstorming here.And happens to be some valuable brainstorming,by what I see...
Just so we're on the same page please. No offence here..
Thanks all