Experience of TAAATS - previously the most advanced (rave, blather, drool) in the Western Spiral Arm of the Milky Way...
One year later....
Machine now works so slowly hardware upgrade seriously considered.
Every software "upgrade" ("its software based, change what you like") to one feature b*gg*rs up another one.
Actual change is a torturous process hampered by lack of understanding by system people about ATC and by ATC people about fiendishly complicated system.
Thousands of safety related faults remain, thousands of suggestions made to make system less infuriating to use. Every fault, if proved to be the fault of the specification, costs big money and ludicrous time to address.
Every so often provider notices a feature is "turned on" that is not in the specification, so "turns it off" (regardless of safety/workload effects) and demands money to "turn it on" again.
Management, bored after protracted process of transition (desperate to justify our top-heavy structure), have run blindly into other projects before transistion is complete.
Reporting of bewildering or everyday faults to techs results in:
1. "No, that can't happen"
2. "Yes, that happens all the time. Have to expect that with a computer based system."
3. Technogibberish worthy of Star Trek (tm).
Best of luck Canadian colleagues, don't expect too much.
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"Station calling Centre, grow a head..."