I would like the ability to completely lock the main task. Right now, the lock option only limits a few settings, but people can still add comments, upload files, and make updates on the main task, which disrupts the workflow we want to create. Our goal is to use the main task only as a master task with key information, fully controlled by the task owner. Other users should only be able to work within subtasks, while the main task remains locked as a central reference point.