Hmm...Have you guys tried BiB? Last game I played with it I saw that flame pios do not pose any threat to BC surprisingly. I noticed that the people inside are immune to fire and do not have the same cover type as the PE IHT that makes flames a big threat to people inside.
Also, BCs are very tough compared to jeeps so they should take about 3 fausts to get it (2 fausts if its wounded by 1/4 of health)in a single volley (who charges them straight into volks blob anyways
). They can drive right into Wehrmacht's base MGs and only suffer little damage.
I'll dont get more than 1 Bren because their usefulness significantly decreases later game. That's why I try to use them to my advantage and try to put a huge dent with BiB early game (capitalize on its extreme early game advantage)and make it so that by the time he techs to t2 Pak or fausts, he has almost nothing else, or next to no volks
If you get fausted, you need 2 or 1 more to finish it off. In case this happens (like I said in the OP) get your inf section out of the BC and act as a meat shield to kill of or prevent VolksGrenadiers or paks from finishing it off while BC rushes home to repair. Who says your only using just a Bren or your only restricted to 2 inf sections? Just like Americans vs MG you can hold off 2 inf sections in cover while the BiB (carrying your 3rd inf section with bren lmgs) flanks and destroys MG.
I've had quite some success with this in team games (since engineers can repair BC) at higher levels. Though I haven't done much of this in 1v1s, I'll try to test them out there.