I have recently had success with the following list in casual games at my LGS.
YT-2400-Dash Rendar (36)
VI (1)
"Mangler" Cannon (4)
Title (5)
Mercenary Copilot (2)
Total- 48 pts
X-Wing- Biggs Darklighter (25)
R2-D2 (4)
Total- 29
X-Wing- Red Squadron Pilot (23)
I know that most conventional "Super Dash" builds incorporate the HLC, but for me the Mangler seemed a much better choice... you avoid the doughnut hole, change a hit to a crit and it is an overall improvement to the 2400's base primary attack. I will probably be ditching the Merc Copilot... it does have a synergy with the Mangler, but only at long range.
I will probably go with Kyle Katarn for crew going forward, and ditch VI.
Biggs does what Biggs does... keeps Dash from getting shot to hell, and R2 keeps the shields up.
RSP will probably get replaced with a RP, basically to add a EPT to Dash or for the initiative bid.
I simply want to take this casual winner and make it more competitive.
Any constructive criticism would be appreciated.