dont think this is not happening here in australia. apparently the family court already takes into account and recognises polygamy by recognising additional wives overseas
a woman in canberra challenged a sharia compliant will in 2012 - lawyers here are preparing these by the thousand
in 2010 a law firm - logie-smith lanyon employed an imam as a consultant
see also - https://theconversation.com/religion-and-the-law-sharia-compliant-wills-in-australia-6795
