Really Interesting. Central Texas is going to have an SC next weekend, so we'll see what turns up to the event. The Avenger combination has already gotten out of there and I've seen at least two guys run it locally, which is not say what the Imperial players in San Antonio are up to.
If people are dropping 22 point bids, that will obviously really help out the combo. I'd be curious if something like @PT106's old dual-ISD build might be revamped. There's a high activation count, and two ISDs take up so much real estate that they can block in a lot of ships, which in turn sets up an Avenger Boarding party combo, so it is possible that it doesn't have to rely on first player. And I think that's the catch: not getting caught up in the toilet bowl spiral of bidding and then outbidding.
I can tell you one thing that would work against a first player Boarding Troops/Avenger: a Rieekan ship list. Block off Avenger's approach to your main ships long enough for the Boarding Troopers not to matter. Alright, you'd like to board my flotilla. Excellent.