I would like to say I genuinely enjoyed reading this. I especially appreciated the idea of using warp sustainers for dirrctional control at warp. (I hope that's what you were saying, cause that's what I understood.)
And I'd like to incourage you to create a write up on the political and technical reasons why the Paragrin was chosen over this design. I'd also enjoy reading a technical manual, if you decide to write one.
No promisses, but I might make a 3d model/sketch of this design, if you don't mind.
In conclusion: Good on ya, mate!
(Aw, crap! My spell check is on the fritz... )