since we are building for our own community needs as well, we've been one of the biggest power users of guild with 58k members.
here are 4 features we implemented recently to support a community of this magnitude to help out other community managers:
1- communicating the state of requirements for getting roles more transparently.
gives more clarity about what to do to "get in", so it's also more inclusive. no more wondering "where do I get that NFT".