The standard Deathtroopers were spot on with their aim against the rebels on the beach - sharpshooting them even when they were hidden behind crates. However the two senior-level Deathtroopers with pauldrons who were with Krennic were killed too easily by Cassian and Jyn when those two were awkwardly hanging by one arm each?

I would have liked to see the Deathtroopers use more creative methods of earning their namesake.

Perhaps a hand-to-hand or melee showdown scene with Chirrut & Baze. TFA has already shown us a glimpse of how good Stormtrooper melee battles can be. Extra movie-points for Donnie Yen smashing the Deathtroopers' helmets/armour to reveal a grotesque Frankenstein patchwork of cyborg implants that are keeping them alive. But, oh well, this is a Disney movie

This might tie in nicely with the question of why there aren't anymore Deathtroopers after Krennic's demise - if they were simply an elite commando squad, surely given time the Imperials could have trained more (by say the Empire Strikes Back or Return of the Jedi).