Having some experience of such (industrial relation) matters, if ALL the instructors as a group ask politely, something might happen. If you collectively threaten, then you're just likely to cause an entrenched position in the management. If one person only asks, they'll probably get isolated, sidelined, or "eased out".
If you are going to collectively threaten, for goodness sake all join an appropriate trade union and get them behind you.
G