[spideymans]

>I’d want would include allowing more than 2 apps in a split view, and perhaps some reconsideration of that floating app-stack thing to make it less clunky.

iPadOS 15 has limited support for floating windows and more than three "windows" on screen at once. I'd posit that they are preparing the APIs for floating window support for external displays in a future version of iPadOS.

>As a daily user of tiling window managers on a Linux desktop, floating desktop windows seem like a UI dead end that we’ve somehow been trapped in for decades

As a Mac user, I agree. On my 13-inch notebook, I more or less always use applications in a full screen configuration. The notebook screen is too small to allow for effective uses of floating windows.

However, even on a 27-inch display, I still find myself using full screen applications more often than not.

In fact I'd be ecstatic if a future version of macOS stole some of the multitasking features from iPadOS. Managing fullscreen apps on the Mac is a lot clunkier than it is on the iPad.