What I and the other Ubuntu UI people would really like to see is the ability to uninstall Wine programs from within gnome-app-install (The Gnome applet the user interacts with after selecting Applications->Add/Remove).
The UI is a fairly intuitive step - just add a "Windows Applications" category and list the installed Wine apps on the right. Once that's done, we don't need a special Wine program for uninstalling anymore, since we can expand the functionality in a similar place where the user could reasonably expects to find it.
This sounds somewhat like it'd be a bit of a side project to my intended plan. Implementing such a "Windows Applications" category wouldn't involve much more than interating through the registry, and then calling wine on the appropriate uninstaller .exe.
I would still suggest a proper Control Panel namespace for Wine would be best. Implementing functionality to embed the Wine control panel into other X windows would then be possible too, although looking at the patch submitted a few months ago, I fear the implementation of it may not be the most tidy thing. The idea of a side project implementing a basic set of reusable functions to iterate through the registry to retrieve application details (for Add/Remove Programs, at least) may be better.
Regards,