> That *could* be fixed, but I imagine the sense is that anyone who's hardcore about their zip performance or feature set will likely be using 7-Zip or WinRAR, etc.

On the contrary, power users like me use 7zip because built-in ZIP support is so slow. And the vast majority of regular users - they just silently suffer and use the slow-built in.

(And I use 7zip because it's the least bullshit compressor/extractor I know - works perfectly fine through context menus, without having to ever look at the main UI. But you know what would be even less bullshit? The compress/extract functionality in explorer.exe! If only it wasn't dog slow...)