New guy here.  I was looking over your material, and was wondering why you didn't include any of the ships from the FASA game system.  While there are definitely problems with the balance of their ships, particularly the post-movie era stuff, it would significantly improve the ship selection, and you could modify them to suit your interpretation of the ship's performance. 

I am not a fan of the SFU, having had a falling out with the designer, and so moved on to Full Thrust.  My efforts to devise a version of Full Thrust to do what I want is becoming more challenging than I had expected, mainly because FT doesn't model different tech levels well, which at first glance Starmada does a better job of that.  Which is why I am here, looking at possibly adding Starmada to my collection of rulesets.