What direct connections, if relays would become mirros of the whole net, what is then the whole net? What direct connections without a common server ( relay) are possible? Sure u could and must run for curating ur own posts anyway a server, but will that reduce bandwide? And can u do that on a mobile? Sure clients will be relays and store ur own posts, but to share them behind NAT on a mobile is only convinient possible with Tor. And then why not use tor socks from the tor browser in first place, pub/key auth is in essence transport independent, why use nostr bulk global servers anyway? To find inital contacts? Then one or two global relays would be enough.