Following on from the "universal rear support" house rule, I thought of something else regarding Bw.
If Bw are rear supported by another Bw, they get +1 in shooting. So rear Bw supported Bw would become CV 3,2.
An alternative would be to treat Bw behind another Bw the same as an extra Bw unit firing and provide a -1 to the target unit in the shooting step. This *might* be too powerful, as in my mind it makes side extra units firing obsolete. i.e. Why would I expose my delicate Bw out front when I only need to expose 1 of them for the same shooting ability?
There is precedent for shooting cv3 in HOTT and a few other DBx like games.