Well, there's always PMT but you might be better off here
I can't think of anywhere 'bigger' than here apart from possibly figure range specific forums (such as the Wargames Factory one) and the fantasy oriental ones like Bushido
Start a topic and see what happens
It seems to be an unfortunate universal constant that regardless of the subject matter some forums are full of people that will not accept any ideas other than the ones they subscribe to and they seem to think it's necessary to treat anyone who doesn't agree with them as worse than excrement. I don't get it. That's just the way some people are I suppose. It makes me appreciate the LAF and the people here all the more!
I was going to put it nicer than that
but yes, that's the impression I got
cheers
James