This is a list I kind of stumbled across messing around on YASB on my phone. It's a couple of pretty basic SF aces and Soontir Fel.
Quickdraw, Adaptability, FCS, Lightweight Frame, title
Backdraft, VI, FCS, Lightweight Frame, title
Soontir Fel, PTL, Autothrusters, Targeting Computer, title
99 points
Despite making the list 3 days ago, and having never played Fel against another player, I decided to take it to a tournament yesterday. It was good. Really good. You forgo the traditional ace maneuverability for the offense, hit points and squirrelly close in maneuverability of the SFs.
Fel still has to rely on not being shot at to live, but he does add the traditional ace element while still matching the offense of the SFs. You're not really relying on him to close out the game, though, so you can be aggressive and push your advantages.
All in all, I feel like this list combines the best of a few different things for the Imperials. Very high PS, high offense, maneuverability, and both resistance to turrets and some beefy hit point defense. The current bogeyman against Imperial aces, K-wing bombers, are not nearly as scary vs SFs because they have more hp and can just run away and fire with the rear arcs.
I'm not naive enough to think that it's perfect or anything, but it feels very, very strong against almost any squad I can think of, and I need a reality check. What are the squads that can really prey on this thing? There's a little bit of wiggle room for points, so upgrades can be tweaked a bit.