Restrict email sending permissions by pipeline in Help Desk

I find it pretty unnacceptable that we cannot limit viewer access to help desk pipelines.
We have multiple teams over various departments that want to use this platform.
As it stands, all staff can access all pipelines and can use any group inbox to reply to any email without the ability to restrict much of anything.
We cannot put our compliance department and their various teams into the help desk because what they work on is confidential to their teams. This seems like such a base line core function need that just doesn’t and hasn’t ever existed despite requests for this within the older “Tickets” function going back to 2017. Are there any plans to restrict teams or users from view access to specific pipelines in the Help Desk?

This is causing a LOT of issues for our company. We would add a lot of seats if we could have the ability to truly make this Help Desk be multi-departmental.