Peak Outlook was 2016, right before the 365 mess.

I heard excel guys say peak Excel was 2010.

Where there any genuinely useful features Outlook 2016 had over 2010?

Mostly memory management and 64-bit support finally being on-par with the 32-bit versions, but it's hard to argue the nuance overall.

The switch to hardware-accelerated rendering was poor. It's still causing issues today. Is it the graphic drivers' fault or their poor implementation? Who knows, but they also disabled the switch that allowed to turn it off, which is just classic Microsoft being annoying.

I'm an Excel guy and 2013 was an improvement over 2010 with very little to dislike.

You can take LET and LAMBDA from my cold dead hands

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XLOOKUP was introduced in 2019. I thought it was a great update

I wouldn't trust an "Excel guy" who said that, they aren't staying current/using new functionality.

Just off the top of my head:

IFNA, FORMULATEXT, DAYS, CONCAT, IFS, SWITCH, XLOOKUP/XMATCH, FILTER, UNIQUE, LET, TEXTBEFORE/TEXTAFTER, LAMBDA, et al.

But my favorite improvement is the "don't intentionally corrupt CSVs" options found in Settings -> Data -> Automatic Data Conversion (hint: Disable everything). Only took them 30-years to add that. Absolutely absurd these are enabled by default still.

Excel is one of Microsoft's best pieces of software and one of the very few they haven't turned into slop YET. Still don't understand why we don't have local-only Python to replace VBA at all license levels (i.e. non-cloud).

I gave up on Excel for working with CSV years ago, but it sounds like I need to go back and try again. It used to drive me crazy how the import function was all "just fuck my shit up, Fam" every time.

Reminds me of the old joke about it: How is Microsoft Excel like an Incel? Both think everything is a date.

> Automatic Data Conversion (hint: Disable everything).

It still butchers long strings of digits if they are more than around 12 and less than around 15 digits long, its very annoying still.

Also textjoin and textsplit and the whole spill functionality.