If we start investing now on clients that are dedicated to relays as first-class citizens, community relays, niche relays, then things might change and we might see more of these relays popping and more people organizing themselves around relays and less around the big generic feed.

The big generic feed cannot die and must not be abandoned, and the outbox model is still a crucial part of having that work correctly, but semi-closed communities around relays is a natural thing that may solve the two problems you raised. 

 heard you clear. sounds very interesting.