You might see some of that, but it won't be a crisis. People forget the industry experienced a prologed hiring boom for several consecutive years, at both the mainline and regional levels, with most regional mins at a hard "12 and 2" non negotiable and competitive mins significantly higher than that for most of the boom.

If we face a similar or greater prolonged hiring situation, there will be a need for civilian instructors no matter what. And those instructors will be busy, training other students and instructors. Ab initio does nothing to change or mitigate that. Even if 1500 hours is bargained down to 700 or 800, that only buys them a few months relief from the pipeline, and canabalizes instructors off the top even faster, significantly lowering the average dual given for each instructor taken, who then has to be replaced.

There are more than enough higher time pilots out of work (or just out of flying work) that can come back (yes, some won't, but there is a large enough quantity of them to soften the blow for the transition) and by the time that is absorbed there will be enough demand that just about any CFI anywhere can get 100 hours or so a month if they want it.

And if they are still short on the recruitment end, they will have to give signing bonuses, higher first year pay, hotels through all training and maybe even *gasp* better contracts all around. But a true crisis this is not.