I've figured out what the cannisters are on the backs of the Kriza and Sombra. Answer: Cans of wup ass Thanks for listening to my TED Talk/dad joke.
I had thought maybe they were some type of gyros to represent the FA skill, but the Sombras are kinda ruining that theory.
Yeah I had though they were ammo cannisters or something FA related as well, but now the only theory supported by the data is that they are wup ass cans.
My theory is still it represents terrain skill of some kind? The only common thread between the Sombra and Kriza.
Yep, the terrain skill would be viable, but also I somewhat doubt it has some specific function or something since the designs tend to be inconsistent(i.e. the visors of Hollow Men, which is applied to Puppetactica and Evaders with no special features, and then Cheerkillers got them as MSVs).