Deleting Styles in Bulk
It would be good to have the ability to multi-select styles so that they can be deleted in bulk.
Currently there are 2 ways to delete styles: (1) manually click the drop down, right click 1 style at a time, and click delete.(2) run a macro that will delete them in bulk, but takes away your ability to distinguinsh which you'd like to keep around.
When bringing data together from external sources, it often becomes a problem with bringing in many unwanted custom styles. When that happens, it can bog down the functionality of the spreadsheet. It's important to keep styles clean of junk, but right now there is not a good way to do this.