As has been said -
consider it.
At many airports in many parts of the world turning a 777-3 into wind could put a door 1 slide and both doors 5 over the bondu/storm drains/edge light (ouch) or worse - possibly in the dark, and you're often dealing with places where the fire services kit has worse head lights and a poorer off road capability than my old Citreon Saxo. So that's "turning" considered......
As for the TRs, as has been implied on the 777 according to Boeing you should try for reverse on both, regardless of the failure, I believe on the 744 you try to select all to reverse. and like others - no idea why.