I would be nice to have inline/embedded video playback directly in feeds and/or in the post view (with or without auto play, that could be a user setting).
Currently the experience for me is not ideal, a YouTube video opened in the in-app browser can’t be viewed in landscape mode because the in-app browser locks into portrait mode, which can be a pain, but maybe I’m missing something.
In addition to that, if you start a Youtube video in the internal browser and close the browser window, the video keeps playing - you can hear the sound until you start another video in the in-app browser. That is a bit annoying.