I have to manage multiple geodatabases and would like to be able to upgrade to Desktop 10.1 when it comes out. The only problem is that some of our databases can only go up to certain versions based on vendor software. I would like the ability for example to install ArcSDE version 10sp3 from Desktop version 10.1. I envision an install with the option to pick the version, starting with 10.0 up to the version of Destop installed. This would allow me to have the latest version of Desktop and be able to install lower versions of SDE as needed without having to uninstall desktop and install a lower version of desktop.