yes exactly, but the community already exists in the social graph. 99% of people will be invited to communities, won't be their founders. Founders will need to acquire reputation themselves, but these are the type of people that aren't afraid of doing the work.
Discussion
Make sense, the founder improves his own WoT, the community mirror it and so the members benefit from it.
But the community have to be closed with strong gates, like invitation-only, payment, or very heavy PoW.
And it's not easy to verify these conditions in a programmatic way.
Let's see how things evolve.
I see this evolve towards #communikeys labeling their active members in an open way. So that the apps they use can easily pull that data.