To form military units, named after local heroes, from men who come from the same region has some advantages. These people will not feel like strangers to each other which gives them some extra cohesion.The Chechen units which are already operating in Ukraine have shown that such an approach can be very successful. The regional approach has also the advantage of involving every part of Russia in the endeavor. It makes the 'special military operation' in Ukraine a national project.
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In the United States, some National Guard units have unofficial nicknames for local heroes. It is a good program. Britain had the regimental system until recently in which all members came from the same region and usually knew each other socially.