Besides verified authors and subscriptions (which are good ideas but fall on the category of fees and requirements) any community need bonuses-like incentives for their tokens, access to vip services and features, stake-weighted decision models, and the most important is to provide the opportunity for some product or service that is already available with FIAT to be available thanks to that community token... when this is accomplished you just create a FIAT income gateway for your community that will justify trading FIAT for your community token hence attaching value and trust to your token economy.
Looking forward for communities that are successful on this one.
Best regards.