My feed is starting to look very different depending on the client I am on. And I love it. Let's go!
Some clients only want to support specific event kinds and thus don't show up to 40% of the content others do. While others use different relay sets and smart algos to find replies that are interesting to you and show them in the main feed. Some show everything even if they have not been able to load previews or posts while others hide everything until they download and are able to display all the dependencies at once.
Lots of experiments. But, more importantly, there are many diverse opinions from client authors on what the main feed should have and look like. And that's awsome!