Most clients already support this. Enter npub rather than nsec. 

It doesn't have to be **your** npub, it can be anybody's. Lurk as anyone you want and see what they see.

nostr:nevent1qqs96x2ayyyfl7w9vy82438lswlaesca90wq6d4rclsysgngv56dc5cpr4mhxue69uhkummnw3ezucnfw33k76twv4ezuum0vd5kzmp0qgst0mtgkp3du662ztj3l4fgts0purksu5fgek5n4vgmg9gt2hkn9lqrqsqqqqqpahmlmv 

 Not really, the idea is to still create encrypted events for all your bookmarks etc.