Yeah yeah, it's me again, sorry 
Assault Specialization ability of Vulkoras seems to be working negatively, reducing the frequency of shots the Vulkoras does, instead of increasing it (increasing cooldown instead of reducing it).
I ran a test:
10 level Vulkoras attacking a planet with its main guns (assault spec level3) did 135 damage over 60 seconds.
10 level Kortul attacking the same planet did 230 damage over 60 seconds.
Clearly something isn't right, since Vulkoras should be doing more bombing damage by itself than Kortul, according to the in-game stats.
Indeed, Vulkoras siege gun cooldown indeed increases as he purchases levels of Assault Specialization (i.e. he fires more and more slooowllyyy), NOT decreases, while single shots are more powerful than Kortul's .
By the way, Power Surge for Kortul also doesn't seem to reduce the weapon cooldown by 75% (it should fire 4 times when it would normally shoot once. I'll run a test, but I think it doesn't work) , but instead its weapon damage gets increased...? A way around or what? 
Anyway all that was witnessed in 1.05.
I checked the beta changelogs for something to do with those bugs and I found nothing.