I've been thinking hard to make YV-666 a decent ship for a competitive play. IMHO, only with Wave VIII crew upgrade cards it has become possible. So this is the list I am currently testing.
Bossk (35)
Predator (3)
Mangler Cannon (4)
Zuckuss (1)
4-LOM (1)
Boba Fett (1)
Inertial Dampeners (1)
Tel Trevura (30)
Push the Limit (3)
Dengar (3)
R4-B11 (3)
Punishing One (12)
Hull Upgrade (3)
Points total: 100
With PS 7 I don't have to keep any initiative bid. What I like most is that both ships have a bit of red dice passive control, as well as opponent's green dice control. Inertial Dampeners help Bossk stay in battle for a little longer. Also, Bossk's ability works well because of relatively high chances of uncanceled crit (here comes Boba, if needed). It's just fine for Bossk to accumulate tons of stress or ion tokens, in my opinion. The Jumpmaster lives longer with extra hull and PTLs for focus and target lock (if necessary) to feed the droid.
Local players don't play 3 Scouts or 4 TLTs (for now, at least). On the other hand, unique pilots prevail, so Dengar always works well.
I would appreciate any suggestions concerning the improvement of the list and experience of those who have already tested it or a similar one.