Menen, I agree with the doing TWO things at once.
The problem gets bigger as at some stage you will have to reconfigure flap and then climb. So do you interrupt a Phase One Checklist and call for a flap selection or compromise your performance by holding the flap and either climbing or accell past optimum climb speed?
The guidance I have been given is you MAY compromise your 3rd segment by raising the second segment alt esp if you have a max engine time limitation.
My thoughts are if you are performing poorly after a post V1/ Pre Accell segment it will take some time to get to that alt...hopefully enough to complete the Phase one. Then proceed as normal
If you are light/cold/etc and performing well then you will reach your accell alt before Phase Ones are complete BUT you will have a healthly margin above any limitations.
My personal thoughts ...if its still turning leave it alone, Ifs its not then what ever you do isn't going to get it back. if it's turning and BURNING then have a quick think and make a DECISION based on as many variables as your brain can accept in that split second and then stick to it
