1 CFFTS QS/TPs are structured a bit differently than what I understand the pilot structure to be. There is not really scope to keep an instructor only instructing a certain phase of a course. The ACSO pipe experiment has been a great success- the pipe instructors there are easily the equal of their more "experienced" counterparts. Often, what they lack in experience, they make up for in enthusiasm and dedication.
No one gets assigned a permanent instructor, so each student gets to see a wide range of instructor styles and experience levels. All instructors are regularly monitored. I'd say the risk level is low here, given what I know about the AES Op QS/TP. Now, in a perfect world, there would be no need for pipe instructors, anywhere. The current world we inhabit is far from perfect.
Given the current state of the AES Op occupation (demographically and the ability to absorb new blood through OTUs/Sqns), things are going to have to be done differently than they have in the past.