I don’t think that in particular is on our radar yet.
We’re first focused on implementing a rich text editor mode, so users can create posts without needing familiarity with markdown. We’ll share more very soon, likely within a week or so:
We are also planning on some UI improvements to the toolbar, but I don’t believe the ability to reorder icons is a part of that.
Is there an existing topic where you’ve already shared more about what you’re needs are in this regard?