For WSS to, say, SYW, is 6mm or 10mm the more popular of the small scales?
I tried 10mm for ACW (admittedly a later period) but I found painting them not a lot simpler than 15s, with less visual appeal. So not easier to paint than 15s, making it harder to paint tons of them. But I’ll admit it was just one experiment, with the truly gorgeous, exquisitely detailed GHQ, so that might explain it ....