Wellconcerned but ill-informed:
The HMI wasn't good enough for them - they had to have a special system partition built so that they could use the equipment the way they thought it should be used.
Complete nonsense. Each TCU, SY, ML, BN, AD, PH and CS have a separate system "partition" - not because they all want to do things differently, but because it it is the basic system design. Nothing more than that. And for the record, SY had about the smoothest transition of all the ATC groups.