I realize Rich Text block is fairly new so forgive me if this is already on the radar.
For most of my text, I apply stylized transitions to fade in and out (like a dissolve), and sometimes turn things like shadowing on and off during the transition, but currently we can’t do any of this with a rich text block.
Most of it can be done in the font material so the most important request from my perspective is a “Get Dynamic Material” node for RichTextBlock, like most other widget types have. But being able to change other properties, like shadow color etc, from within the event graph would be great too.