As we all know, core war has basic, telegraphed attacks and mostly lacks scaling defenses (this post relates to competitive settings). It also has poor ranged options that lead many to using a double melee setup. Berserker improves a warrior's ability to land attacks somewhat at the cost of defense and being even more limited outside of berserker mode. Spellbreaker provides scaling defense via full counter and improved offensive utility with dagger and boon removal. However, most would agree that even with the spellbreaker traitline, warrior is still a bit lacking in terms of defense/sustain and ability to land its hits. In a sense a "modern" warrior might look like a fusion of berserker and spellbreaker that improves upon the advantages of both specs.
I was really hoping for mainhand pistol because it might have provided an anti-kiting tool and allowed warriors to provide pressure while choosing the right moment to engage in melee. Such a tool would obviously help compensate for the current lack of damage mitigation available. Frequently taking 5k in random damage just for engaging a target is currently a huge problem. So only getting offhand pistol is a bit of a disappointment in this regard.
I think I also spied an evasive roll ability, presumably tied to the offhand pistol. This is actually sort of worrisome given that 1) the similar ability on rifle is bad and 2) with all mainhand weapons being melee, such an ability may actually help the enemy kite the warrior.
That being said, some of the gunsaber attacks look like they extend one's range a bit and may be available to every build taking the new spec. With the right utilities (a big if given core utilities and the pattern from previous elite specs) and traits , some scaling defenses could still be on the table. So in short there are a few worrying signs from the preview, but there's still the chance the spec could address some of the current warrior shortcomings. I don't want to be too hasty in passing judgement as after all, we have only seen a small preview thus far.