I agree with this task: https://developer.blender.org/T64929
but I think one more measure could be taken to fix crowding in the top-right of the viewport:
Separate the ‘Navigate’ gizmo into Buttons and 3D Axes.
(Note: this would only appear when ‘Interactive Navigation’ and not ‘Simple Axis’ is enabled)
I rarely use the buttons but find the interactive axes useful. With the ability to disable just the buttons (from the ‘Viewport Gizmo’ dropdown), the area would look less crowded, and I could still use the other gizmo.