I'm not sure what happens to the 3 Steem you spend to create the Community, but I assume it gets burned.

Hmm, I think I'm in favor of it being pretty cheap. Steem is a global community. I live in the US and $100 is something I could afford no problem, but in other parts of the world that's a LOT of money. Those people could ask the community for help and maybe that would work, but the truth is, I don't personally care about most peoples random communities and I imagine most Steemians wouldn't either. I think the real value add will be getting LOTS of people on the platform and all those people will need RC's to transact. If some random community that I don't care about manages to onboard 10k users that all are doing their own thing that doesn't interest me, it's still good for all of us. I think we should make these first steps as frictionless as possible because once they're here, we can monetize them.