Wow. I understand you're not quite done with texturing and lighting... but she's pretty ugly. I always preferred the sleek, light design of the WC2 Rapier over the SWC Rapier.
But ugly isn't necessarily bad. The Scim's pretty ugly too! This Vanguard is bulkier and dirtier-looking than the Arena Vanguard, very threatening, and looks old and solid, almost like you've blended a bit of the WC Movie aesthetic into the SWC Rapier. This could really work, actually. Like the Rapier got fat, heavy, solid, and stronger late into its life - sorta like, oh, I don't know... George Foreman. From space superiority fighter to strike fighter.
Do you think you'll make her fly the way she does in Arena? The various Rapier II variants in Arena are all much slower than the WC2 Rapier II. I don't think any one of them has an afterburner speed over 1000kps.