As to the discussion involving the new equipment for both the First Order and The Resistance. It's rather simple, VII takes place 30 some years after RotJ (VI). The Resistance is operating Incom-FreiTek T-70 X-wings, not the Incom T-65B X-wings from the Trilogy. The TIE fighters are 2 seat with improvements, and smek, even ejection seats. Also, no where in any diagram of the TIE do they show perfect circles for the cockpit glass. they are, in fact "rounded" octagons.
_________________ "It is better to type nothing and be assumed an ass, than to type something and remove all doubt." - Me