What's more important to a shooter than the guns? I submit that nothing is. Amazingly, this is still something that shooters don't get right by offering the player guns that are bland, sound uninspired, are hard to use effectively, possess poorly conceived functionality and/or any combination of thereof.
The guns also need to have personality; they need to be characters in and of themselves. Dust 514 seems to understand this, because why else do you create a dev diary specifically about the game's guns unless you want them to stand out and be as memorable as any other aspect of the Dust 514?
Based on the video, and the handful of sceenshots, CCP seems to be on the right track. If you want to learn more about Dust 514, then visit www.Dust514.com, and Facebook.