Yoshi-P's Interview with Famitsu includes a few comments about AST

[Mclyde]

Yea you got it :

that's just adaptability

thinking about the best use of this random item in the given situation

Just a decision depending on

You have to decide if

your decision is only between TP+ and AoE-something

may or may not contribute something useful

It's exactly why this job is so cool ! Every 30 sec (or less thanks to the store skill) you have decision to make that can't be known beforehand. Combine that to different group make-ups and different boss mechanics and you never fall asleep 'cause of knowing classic cycles.

While other classes are adaptive all or most of the time.