Better content management
At the moment writing text offers very basic functionalities. I would like to have more options to enter text like possibility to change character style (italic, underline, linethrough, double-line).
Better handling of images in the flow with the possibility to have text adapt around the image and have images positioned in different ways with respect to the text flow. This should be applied to any media actually: twitter posts, videos etc.
Thanks for the feedback! Make sure you submit votes for the text formatting idea to cover your first point.