There are no small or big collections and we all collect different things, which makes this particular hobby so interesting, imo. Sure, it's all paper, but beyond that, we ALL have different interests and those are always fun to witness. Some collect modern posters, others the silent era, others slashers, all good stuff
Having said that, a few people have similar interests than you, Spider. Hopefully they'll reach out. Also, like you said, some people display their posters and some keep them in flat files (me, since I don't have a single poster up at the moment). Like I said, we're all different.
T