This isn’t exactly what you asked for, but you can add a horizontal scrollbar to the arrangement view, which makes navigation a lot easier…
1. In an arrangement, go to View menu > Customize Editor Profile.
2. In the Editor Profile Properties dialog, click “Insert new…” button, then select “Scrollbar” from the list.
3. In the Scrollbar Region Properties dialog, click OK to accept the default layout options.
4. Back in the Editor Profile Properties dialog, make sure “Scrollbar” is selected in the Region list, then use the “Move down” button to move it down below “Tracks”.
5. Click OK. You now have a horizontal scrollbar… With bonus zoom out and zoom to selection buttons.
The same technique works inside Editor windows also, as their profiles can be similarly customized.