Twenty years of stupidity
Missing calendar (don't talk about pseudoActiveX from VB5/6)
Missing Pane and Tabs for (opened) workbooks (file trees).
Stupid Ribbon and real XML editor/tool for that (yes, only 13 years :-D), customization for idiots with callback. No, VS does not solve the situation.
Stupid ComboBox for Data/Validation without mouse rooling and real-time search
You need ExcelVoice Forum for all above? Yes, year 2021 is the last :-)
So, maybe is the time for support WPS Office, OnlyOffice?
I am a lecturer, a developer, and now - hater. For this, and for "AllPowerToys" (successor to stupid PivotTables). Power FX as the future by Nadella.
And yes, you can block me.