Scrolling through Worksheet Tabs
In a workbook with many tabs, it would be nice if you could use the scrolling functionality on your mouse to scroll through worksheet tabs quickly instead of clicking on the left/right buttons a bunch of times. This functionality is available in Tableau and I use it all the time in huge workbooks.
This one has my vote! I was going to post this suggestion, because of the same feature in Firefox, but I see it is already suggested.
Much like what Firefox (I'm guessing, I actually use Waterfox) allows for the top tab list. A lot quicker than pressing the "left" and "right" buttons repeatedly.