All for many coloured (ad multicoloured) helmets here. They’ll make a nice additional variation to gear.
For the shields/flags/tabards however, I’d hope for more historical heraldry approaches. You couldn’t just randomly slap a motif on some random colours, but would have to follow some pretty defined rules of colours, patterns, shapes, etc. Most games tend to ignore this aspect, so I’d hope the heavily-influenced-by-history Battle Brothers would pay more attention to this detail as currently there are some real eye-sores for a history buff in there.
http://www.classic-castle.com/howto/articles/Heraldry/BasicHeraldry.html
http://rameset.com/heraldry.htm
http://freepages.rootsweb.ancestry.com/~wakefield/heraldry.html
