Shouldn't be any issues with that mate. The MFD2 is a '2nd gen' headunit, so the same generation as an RCD300 (the crappy bog standard thing) just with better features.
All the issues you hear about battery drain and that kind of thing usually come from fitting a 3rd gen unit (RNS510 etc) in place of a 2nd gen unit on cars (usually pre 2007) with an older can gateway. But it's nothing that can't be worked around.
What headunit exactly have you got?
What new features would you like?
And have you considered a 3rd gen such as an RCD510, RNS510 etc?