Not trying to defend an ATCOs position here just for the hell of it, but such a system as you mention above, Mike, cannot take into consideration reduction in speeds on finals; changes in speed when an aircraft suddenly turns into wind to land and slows down; how a pilot handles his A/C with regards to speed, and a whole host of other variables!
The system in the 'Flyer' magazine sounds very much like it is using a mathematical model to determine landing sequence... what happens if a pilot is flying a jet on or around min clean to see the handling characterisitcs, then decides to throttle up again?
Unfortunately, pure logic, which is what the above system must be using, cannot take into account enough variables at this point in time... the ability to think and reason is not there yet for computers.
Like many of the inventions we used to see on Tommorrows World, the one above, in my opinion, will either quietly go away, or take tens of years to develop properly.