Libre Office is more than sufficient for most people.
> gui configurability
A bit confused by that. Linux desktop environments tend to be more configurable, and you can configure most things end users want to configure in a GUI with the major DEs.
Do you mean the sysadmins cannot configure as much in a GUI? I think that probably is a major barrier as it means a lot of retraining.
Also, when you do something different from everyone else, every problem will be blamed on you for doing that.