The basis for such solutions already exists. nostr:npub1yzvxlwp7wawed5vgefwfmugvumtp8c8t0etk3g8sky4n0ndvyxesnxrf8q allows you to make smart widgets. nostr:npub12vkcxr0luzwp8e673v29eqjhrr7p9vqq8asav85swaepclllj09sylpugg has customizable and savable feeds (I hope they'll do it shareable). And in any client you can make a post with links that everyone can share. But first, it needs to be done, secondly, this requires verification because it opens another gate for spam. And thirdly, for the average modern user it still looks like a crutch in the absence of a recommendation system.