Podverse would potentially be interested in supporting both value-for-value and RSS-based paywalled content.

I see them as separate and non-overlapping features. It's extremely common these days for livestreamers to offer both exclusive premium content AND "superchats" aka boosts aka paid messages sent by the audience (read on both the public and private content).

V4V is more of a philosophy, but sending paid messages is the tangible feature most people engage in V4V through.