I’ve always seen troopers as canon fodder and that’s how I saw them portrayed. Massive in numbers but small in talent. It seams only the flight crew, fighter pilots and command crew have extensive training.
I’ve seen the movie twice up to now and still say its an excellent sequel to ROTJ.
And yes its got loads of WTF moments but so have the OT. Thats part of its charm, they are fantasy movies and should be viewed as such. You cant apply full logic to them or they would be very boring and not Star Wars. The film was well made and well executed, it really shows that the prequels were not. What a shame.