BTAvenger has been a hot topic in the meta since Wave 7, but it's not as effective as BTs and Overload Pulse. While BTAvenger pins exhausted tokens BT+OP can delete (and I mean discard) all defense tokens!
Here's one build that I use to maximise this combo (assuming Vader for Imps):
Victory II (85)
• Minister Tua (2)
• Boarding Troopers (3)
• Quad Battery Turrets (5)
• Overload Pulse (8)
•
Warlord
(8)
• Electronic Countermeasures (7)
= 118 Points
and another:
Imperial II (120)
• Boarding Troopers (3)
• Electronic Countermeasures (7)
• Overload Pulse (8)
• Quad Battery Turrets (5)
•
Devastator
(10)
= 153 Points
and a third (more successful, assuming Raddus)
MC75 Armored Cruiser (104)
• Boarding Troopers (3)
• Electronic Countermeasures (7)
• External Racks (3)
• Heavy Ion Emplacements (9)
• Quad Battery Turrets (5)
• Profundity (7)
= 131 Points
CR90 Corvette B (39)
• Overload Pulse (8)
= 47 Points