i would love the [Formatting?] button also in the description box since i can never remember how to add links in markdown. since the explaining box will open in the sidebar anyways i feel like it could just »live« there while editing any block instead of only being accessible when editing a text block
Prediction: Sander will (~should) become a case study in how to thoughtfully and elegantly redesign a proven interface.
Ability to copy text while being inside the channel. Not necessarily after opening the block each time to do that.