While the spinning attack works for the Matrix Sentinels, I can't see a massive creature employing an attack that relies on producing centrifugal force in this way. Because of it's size, whipping it's tentacles should be able to produce significant range, without it having to spin its entire body around.
I was also thinking that the tentacles would sprout up in more places, yielding to a more Kraken-like look. I'm still liking the wide front that tapers in slowly to a smaller backside. Its helps in relaying the idea that it's a creature built for power, and not for speed.
Anyhows, I'll let you know when I manage to sketch out a concept that I like. I'm still looking over for more suggestion & ideas on what you'd all like to see. I think one I'm going for less backbone, and more tentacles.
Nice! Are you thinking multi-segmented body or one segment? Long or short body?
Just for inspiration we have the crisis aliens
The always popular sentinals
The omnipotent Gravemind
The original bioterror warship, the Tyranid Hive Ship (not as scary when its a one inch model)
And of course the most terrifying tentacled beast ever imagined....
I haven't really decided on the body length yet. I'm trying to get a solid design for the front of the body and then test a couple of things out.
Ok I think the Tyranid Warship you posted was closest to what I was imagining (which, haha, is funny considering the Zerg).
Basically something huge, bizarre, and terrifyingly alien.
I think one of my issues with the Zerg thus far is that they're visually still too close to what seems "normal" for humans, and they've yet to really achieve that whole, "Nightmare Invader," status.