Non-Microsoft packages would be fantastic if enough people supported it.
All the other standard desktop applications that self update at different times (particularly Adobe Acrobat) are becoming an increasing blight on the desktop environment, causing much user confusion and system instability.
If the vendors could get together and agree a single update strategy via one centrally managed delivery mechanism (whether it be WSUS or an other), we as sysadmins would have a lot more control over the deployment of updates and patches, and far better knowledge of what was happening to our systems.
I live in hope.... :-)
