Definitely open to making references to gameplay mechanic changes in the story, but it really depends on the example. I still believe that Hanzo’s carrying that scatter arrow around in his quiver though!
Small anecdote: when we reworked Bastion to include a passive damage resistance skill, I named the skill “Ironclad” to hint at Bastion’s (at the time unreleased) encounter with Torbjörn in the comic, Binary, as he’d be the one responsible for giving Bastion its new defenses!