I've had this idea for a while now and finally have a chance to explore it using Framer.
I call it drag to post, which basically means you pull a content area down to reveal some posting actions. While dragging vertically, you can also drag horizontally allowing to make a selection. If you pull down far enough and release while an action is selected, you go to a screen that allows you to perform that action.
This example is a little rough still, but I was happy to see it come together. I think it could be especially useful on larger devices because you can pull down from anywhere on the screen and access the option you want without too much strain.