Ok, I sketched up a new concept image for Yuri to use, based on his old 07 gunboat model (which was shown on page 2). This thing uses basically the same basic shape, but extends it out to cruiser size (obviously the whole thing would be scaled up a bit, the gunboat model looked rather large for a gunboat anyways) and adds features like the marduk intakes and bomber wings, as well as takes into account a design/location for the forward gun.
EDIT:
The bomber-style wings on the back would actually be reversed - the one currently showing on the top of the ship would be on the bottom, this puts them inbetween the tendrils rather than overlapping them.