Double decker sheet names
When you have a lot of tabs in a worksheet it would be good if Excel displayed them as a double row.
Paul Rohde commented
Yes, Optionally Displayed Double line tab names.
I came here to suggest this feature too, and have wanted it for several years.
Also, each tab name should have fully customisable font, just like a cell.
A smaller font can give a smaller tab, or make tabs more readily recognisable.