So what your saying is the current trend of four short-term CD moves and one long-term CD move fits with the speculation of SMNs' pets— four confirmed— being summoned for only an attack and then retreat immediately?

It's a good catch, but abilities are being revamped in 2.0, so who knows what kind of actions we'll see when we sign in next year. They could go the way of XI where pets drain MP while you keep them out, or they could go the way of every other FF where pets are considered their own attack and consume MP/some status before vanishing.