Creating lists is a big feature in this respect. Such as Nostur has.
Curating lists based off topics, communities, etc.
Discussion
how does this look like in terms of UX?
They end up on the top, so you choose one and the feed changes to the curated list. 
Profile lists ftw!
I use my "Never Wanna Miss" list as my default.
Algo's can and will take both discovery and high signal to the next level though. nostr:npub1wf4pufsucer5va8g9p0rj5dnhvfeh6d8w0g6eayaep5dhps6rsgs43dgh9 has a point.