MWDA and BT were different games from a shared universe, so not sure which you refer to as mechanics or construction.
This probably isn't the thread for this discussion, but beginning gripe now:
Suffice to say that I disliked BA, ProtoM, and some of the other construction rules in CBT. I also disliked how, once ToW came out, the rules centered on canonverse rather than CV being centered on the rules.Up to that point it was rather easy to run a completely non standard game without any rule modifications.
Heck, MW 1st ed didn't even require you to change anything to run it in a non standard setting. The 1st campaign I ever played in for BT was on a post apocalyptic Earth with the remnants of the US and USSR doing proxy battles in the ruins of 3rd world countries. No rule modifications needed. We just ignored the 2 side bars in the rule book that gave a sample setting. I miss that, and really wish tabletops of all stripes would stop centering rules around the setting.
End gripe. ;)
If you read about a older woman from the League at Vic's funeral, that was Jessica Marik who later on put the League back together so it was into the point when they got better.
I'm glad the got better after that. Though I'm not sure how she would could accomplish that without out right military force. The way the FWL was always described, they barely held together when times were relatively good. After DA, it would have been split up into at least 3 states smaller than CC.