I've posted this idea in various forms in other threads, so here's the scoop.
In my fairly limited experience, Epic's biggest issues were :
1. Cumbersome/slow gameplay.
2. Piles of cards were a nightmare.
3. Abilities/upgrades/ordinance becoming horribly imbalanced on a larger pionts scale.
I'm no genius, but this is what I'd propose:
Use all the same dials and pilots from X-Wing 2.0, but entirely different upgrades, points and stats (which would all be handled by the ffg app).
1. All non-epic ships use 1/2 HP of their normal X-Wing HP, ROUND DOWN. (T65=2hull+1s, TIE=1hull, etc).
2. All generics would track damage with on-board tokens rather than drawing damage cards. (Easy to do when most ships have 1 or 2 HP.)
2.1. Each player would only draw damage cards for their command ship and/or squadron leader (like Luke/Vader).
This would probably necessitate an alternate damage deck, which I'd be totally fine with as long as it was also fair and usable for the epic ships. this alone, I believe would be a solid foundation for a quick and exciting larger scale dogfight, without changing attack values or agility
And finally,
3. Alternate balanced ordinance and massively changed upgrades, only accessible to your Aces and Command Ships. (Seriously... generics shouldn't ever get upgrade...unless they're scum, but that's another argument for another topic).
K.
That's it! That's basically how I'd do it, anyway.
Cheers!