Linux

The level of detail and control in the Properties dialog from the file explorer in Windows. Also its ability to easily search by metadata like the bitrate of media files.

Desktop shortcuts

Seamless adaption to higher DPI when I work remotely on my work Windows machine. The RDP clients will just expand the desktop and everything is very small when I WFH. mstsc will change the size of everything but legacy apps according to the DPI of the display.

Support for auto cloud sync from vendors, or just auto cloud sync of setting between devices.

DE stability. I keep a Mac around for times when Gnome is kind of broken.

cmd shortcuts which don’t interfere with app shortcuts.

Powerful desktop Arm chips.

Gui to manage services.

Gui to manage firewall.

Easy fleet management tools.

A real terminal services and Remote Desktop solution.

Desktop icons.

Tighter userland security.

Tighter OS security. Mostly dm-verify and fs-verify.

Tiling support. (There are extensions, but I need to experiment.)

Not having to recompile out of tree kernel modules after a kernel upgrade.

Base and extras being cleanly separated.

For me it’s the Mac Finder. It’s always running so (unless it crashes) there’s no delay in opening a file manager window and, more importantly, it has built in Quicklook and Miller columns. Haven’t managed to find a good-enough implementation of either of those in Linux, so I just work around it.

Eartrumpet.

I miss RDP.
Preinstalled in every Windows, just allow access on the host with one click, open it, type in the IP of the remote host, and it's like you're on that pc. Sound, mic, camera, other devices, multiple screens, ... It generally just works.

On Linux with Wayland, I don't even know how or if it works, or how to set it up on the host machine.

Edit: OK, it isn't that difficult, actually:
https://std.rocks/gnulinux_rdp_remotedesktop.html#Windows

None

Really good image noise reduction software.

That's pretty much the only thing I miss, and I don't miss it enough to suffer through Windows

Not much. Probably just support for some hardware that needs drivers like my 3d printer. But that’s what Vans are for right. Most other “windows only” apps work fine under WINE. If I have to say one thing: powertoys (some of them)

The carelessness. Mac OS is far from perfect, but it just happily chugs along. Linux often creates problems by just existing for too long. It's gotten much much better, but it's still not good.

Shortcuts to move windows on xfce (there's somekind of python script but i don't want to bother) and discord and a few xorg wrapped apps are so fucking laggy on wayland

Foobar2000. Haven't found anything similar in terms of ui customization options, easy convert and ReplayGain operations built in.

/usr/ports & /usr/sbin/pkg

SIGINFO bound to ^T

native ZFS root

Coherent theming, although you've hardly had that since Windows 98.

I've applied themes to make Xaw, Qt, and GTK software more Motif-like, but the GTK ones seem spotty and the Qt theme doesn't work for Qt6, and fonts are inconsistent.

The use of my ANT+ adapter with Zwift. But Bluetooth via the phone worked for 62 miles and several hours today, so I guess that will suffice.

I play and mod a lot of older games most of which aren't on Steam, so getting some of them running takes a bit more manual effort especially if they require a 3rd party patch to run on modern hardware.

Normally it's pretty simple like declaring some extra DLL files, But sometimes I'm jumping through hoops trying to get some old installer than hasn't been updated since 2009 to run...

I've had more success than failures though, Wine is pretty amazing imo.