I totally agree on building more tools, and improving the UI/UX to help creators grow an audience.
However, I'm not sure that the subscription business model is winning. There are more and more signs that users are not willing to pile up subscriptions (streaming services, podcasts, newsletters, ...).

As long as content is not behind a paywall, I welcome all kinds of payments (one-time zap, metered, subscriptions, ...).
After all, Nostr is supposed to be the layer that could power value4value dynamics.