Native Windows XP + Excel was badass. No new features were needed. No one asked for anything else. It was feature complete.

Have you tried running an older version of Excel (2007 era) even in a VM? It is lightning fast. No cell-movement animations and this unibar crap at the top, saving a file is 2 clicks away unlike the newer version going off to the cloud, making requests and having to back out to save locally. WTF.

Excel is an amazing app. UI engineers and PMs at Microsoft are trying to kill it.