My main concern is the physical nature of the gun props in the new film. In 1982 the best way to have convincing firearms on screen was to have gunsmiths provide real firearms. Today studios commission digitally-designed, 3D-printed blasters, have the actors fake the recoil and put digital muzzle flashes in so they don't have to pay an armourer.
I want the new blaster to be a REAL firearm underneath, firing full-load blanks (maybe with machined metal shrouds on it like the Glock-based Dredd Lawgiver or the Taurus 85-based pistol in Firefly) not some 3D printed lightweight which will stick out like a sore thumb in 4K resolution.