The default template of Heading styles currently cannot be edited, but it sure would be nice to be able to.
I am aware of speaker styles, and that can be forced to get the same effect, but it is a lot of duplicate work that could be avoided. 1. set the Heading style to have the structure, and then 2. go back and manually select and 3. re-apply a different style to it to make it look how you would like.
I would actually REALLY appreciate setting them as a list item too, so that with a tab, I can switch automatically switch to the next style automatically, so I don’t have to choose between heading styles or lists.
Also, being able to choose if that style gets a slide made or not.
Is anything like this on the roadmap?