By using some of the available guides on the internet, I was able to install Open Media Vault onto the MBL.
This is a very useful, because WD is pretty much refusing to update the OS. This leaves us with an outdated OS which is a security risk to say the least.
Open Media Vault can do anything that the WD UI could do. The OMV plugin system allows you to add a lot of functions to the device.
You can find my experiences with OMV on the MBL here (it's work in progress):
If anyone want's to join in with testing and tweaking, feel free to!