Why? The fact that everyone is screwed over equally should basicly makes fast loading moot. Adding heavy weapons rather considerably alters the dynamic of the ship by giving it far higher one shot crunching power that it's really ment to have.
For SFC X-Tech, just Effectivly ignore 90% of the fancy X-Tech that doesn't apply to SFC and use the rest.
GX racks are easy to make in SFC. Ignore pulse mode on the phasers (again; screwing everyone equally). Ect ect ect
And the feds don't have or really need a NCLX. The DDX works just fine

BPV: 170
SC4: MC .5