I feel like this was available in the previous version of Whiteboards, but I would like to be able to use slash commands on whiteboards. It's especially helpful for formatting text but also allows you to mention people or tasks wherever you're typing. The new way to enter tasks is less helpful than being able to mention tasks through slash commands, IMO. There is also no longer a way to use bullet points or headers in whiteboards, which is a feature I miss from the previous version.