In my opinion, if you have an instructor who says it should be done his way, do it his way, otherwise do it how you think right!
Heavy weight RTO in a 747? The wheels are likely to go. You are very likely to evacuate. Damn everything else, set the brakes- you don't want that aeroplane moving with people coming down slides! So what if the brakes overheat? They are anyway! Maintenance issues should not affect human life! Set brakes and leave them- do you want to be standing outside and have the aeroplane start moving?
Fire and crosswind- I turn. Say to yourself
'in a headwind, turn into the on-fire engine
in a tailwind, turn away from the on-fire engine'.
We have a 737 that caught fire at Manchester that taught us in the UK that is a good idea!
TCAS RA new procedure correct. I think it is to stop confusion with calls for climb/descent by different people at the same time.