When rebuilding society:
I think it would be useful to adopt ideas that have proven to be useful throughout history. Reject the bad, keep the good, and all that.
Maybe it seems obvious, but most successful civilizations operate with two separate categories of people - an in-group, and an out-group. For example, war-brides come from the out-group... whereas brides from the in-group (the female offspring of a man of the in-group) may have elaborate courtship customs.
I'm a proponent of arranged marriages for in-group brides. Negotiations should be conducted between a prospective groom, and the bride's father.
And naturally, simping for random females would be verboten... but in cases of mistreatment and whatnot, the bride's natural father would pursue any claims (in the case of broken bones, knocked out teeth, consistent publicly visible bruising, etc).
Other male relatives may pursue a duel, on a mistreated sister/niece/cousin's behalf.
In non marital matters... The charge of "murder", by definition, wouldn't apply to the homicide of an out-group person.
Property rights within the community may be restricted for out-groupers.
The West had christians vs heathens. Islam have the kuffar and whatever the opposite of that is... It's a concept that gets results. Christianity has fucked up in many ways, but losing that concept was one of them.
Food for thought. 🤔🍻