The Pegasus/'These Are The Voyages' thing has been done, but I think it was deleted. I may check out 'Alliance Born.'
For more of this sort of thing:
Bionicbob's The Khitomer Conspiracy is particularly fun as he adds bits of continuity from DS9 (Auberjonois' character is a changeling!), Voyager (Omega Particles) and Enterprise (Future Guy talks with Chang) to add depth to the story, like a novelist adds scenes into a book of a film