There are major advantages to migrating DE.
* Better accessibility support (as mentioned) in T457
* Wayland support = better performance/security. Gnome-Shell and Wayland are reportedly working in Debian Jessie.
* Gnome-Shell is the Gnome variant that does not require any GPU acceleration support - essential for VM performance constraints.
`port to GNOME-ish applications`:
* auto login
* disable auto screen lock
* kdesudo -> gksudo