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.
Avelon does it without calling the API but by just embedding the video in the inline web view (or at least it looks like it).