Ax, I don't know if you've run across it thus far, but some gents at Sprites Inc have apparently had an X/ Zero project in the works since last year (unsure of current status). Their art is pretty top-notch.
Might be worth a conversation with them if you have any interest in syndication. If they'd be willing to throw their resources this way, it'd make some potential for some incredible work by the fantastic team here.
Food for thought.
Also, if you're ever in need of potential resources for firearms, the Zoids Legacy Sprites have a large collection of weapon types that aren't necessarily the right size, per se, but they're simple enough to make custom without a great deal of effort.