Add client features that provide usability.

- enhanced reactions

- non sat based polling

- robust search (filters sent to relays can do a lot and hardly any clients leverage it)

- local filtered views (user managed by keyword/topic, private or public lists)

- local mark as read

More gamification options

- more badge issuance (not just one offs, but time, thresholds)

- metric reporting on count of posts written, posts replied to, reactions sent/recv by type, zaps sent/recv

More feeds to get started and keep going. More then just the firehouse of global, there should be targeted topics which gets back to user filtered views