I understand the developers don't owe anyone anything, and everyone's free to leave (and I may, once staying on 10.10 gets to be a problem). I'm just unhappy that they decided to break what I was doing after 5 good years.
For those curious, the features I'm referring to are alt-tab to switch between windows (not applications) and proper virtual desktop support. Doesn't seem like much, and indeed, these features have worked flawlessly for me for years. Once I'm too far behind the upgrade curve, I'll probably have to try another distro or window manager, since from what I've read, Unity has no intention of un-breaking these. It was fun while it lasted though.