A key aspect of project flows is approval requests. A task needs to be approved by a supervisor or manager before continuing the process flow.
Currently this is only possible by re-assigning the task to that supervisor. Which is not what you typically want.
A great way would be to add native support for approvals in Meisertask via Automations. If a task is added to a specific column a notification is sent to the supervisor to ask for approval.
In its most basic form only support for "Send Notification to..." should be added to MeisterTask to accomplish this. As the "Approval Status" itself could be created via Custom Fields. But of course it would be better if approvals are added as a dedicated feature.
It would also be great that only the supervisor can approve/disapprove a task and advance a task to another column.