My take on this is simple:

- FAI classes should almost always be racing ASTs.
- MATs are useful in handicapped races with a range of performance.

John Cochrane makes a point about climatic conditions sometimes making
it difficult or risky to get to a specific point. Perhaps ironically,
the old fashioned sector turnpoints can often solve that problem, at
the cost of flying some unscored extra distance. That's better than not
completing the task.