With Windows 10 ADMX templates finally released I had a thorough search through every setting that was added and I found one of them very useful. Too see the full announcement from Microsoft: http://blogs.technet.com/b/askds/archive/2015/08/07/windows-10-group-policy-admx-templates-now-available-for-download.aspx
The specific setting I found very useful is found here: Computer Configuration\Administrative Templates\Windows Components\BitLocker Drive Encryption\Operating System Drives\
“Configure pre-boot recovery message and URL” which lets you configure the default message that user get when they receive a Bitlocker Encryption while trying to enter Recovery Mode or sometimes appear when they attach their PC into a docking.
I tested it myself and it work just as described (I added an example text to show how useful it would be to configure it for enterprises):