Kwaliti, rejecting my model over your personal preferences doesn't seem right to me. I've often seen moderators reject other people's models because they think it would look better with another texture. This is the first time that's happened to me, and I can deal with it, but it's about time I say something about all the times I've seen it happen to others. I can understand why it happens, and I'm not blaming any moderators for it; sometimes people just need a reminder.
This texture is alpha'd between all of the pieces of the spine, allowing me to create an entire rib cage with only a few polygons. If I used any other texture, I would have to create a helmet with at least triple the poly count, creating every little rib individually.
Think about in-game performance. They may not look exactly like ribs in a zoomed-in preview, but in-game they will look perfectly fine on a unit's head. This is an attachment, made for attaching, and it looks very good when attached. Rejecting it because you think the preview could look better with a new texture and a tripled file size, is pushing it.
Let's just assume you're right, and that it would be better with another texture. Even then, it is still approvable now; it's not about whether or not you think it could be better, it's about whether or not this is good enough to be included among the rest of the resources on hiveworkshop. By rejecting it, you are saying that this would only be worth a 1/5, or violates rules, and I don't think it is either; I think it's at least worth approving with no rating, or a 2/5. Moderating isn't my job, and you don't really have to care about anything I say, but I hope you will reconsider your moderation.
I would have sent this to you in a PM in reply to the moderation message that is usually sent when a resource is rejected, only you didn't send me a message regarding your moderation, and there is no link to your profile within your moderation on the model page, so I'm posting here.
Edit: I was a bit sleepy and grumpy when I posted that. I later searched your name in the resource section to find your profile, and sent you a PM.
Edit: Thanks for understanding, and approving it. I edited my message a little bit, to make it sound less grumpy than it did when I'd first woken up. I think I might have sounded a bit accusatory.