I'm a regional guy and I also think the CA should be either fired or have his flying ability and judgement seriously re-evaluated...

He changed config on the TO roll? WTH? That's way out of bounds...and he did it before V1! He should have just aborted if he was that worried about the config...he could have taxiied back, done the writeup, departed, and filed an asap later.

The TO performance difference between flaps 8 and 20 doesn't matter at all as long as both engines are running! It only comes down to the wire on a V1 cut!

Then he gets a message AFTER V1 and THEN decides to abort...and even so, he took several seconds to cut power!

For those of you who think this could happen to you, you had better re-evaluate how you do business. We are not test pilots here, when confronted with a textbook situation you take the textbook answer: abort below V1, continue after V1.

The only time you are authorized to fully exercise your PIC authority and engineering creativity is when the FE says "there is no procedure for loss of all three hydraulic systems".