We already are able to 'Follow' people (The bell icon on a profile), and we already get a notification every time that someone we follow posts (In the notification area on the top navigation bar), so it would be great to see these existing functionalities built into a feed view, so alongside seeing posts from spaces in the feed, you could make a feed view that shows content from people you follow.
So just like you can set "Latest", "Trending", etc, as views for feeds of posts, you could make one say called "Following" where it shows the posts of people who you are following - Just like how platforms like X/Twitter have "For You" and "Following".