Restrict Tasks to Projects

It would be nice to able to restrict the ability to create tasks to PROJECTS. I find that employees often think they are creating a task in a PROJECT, but are in fact creating the task in the FOLDER. And when we do weekly timecard reviews we are having to put those tasks into the proper project. We then have to manually mark those tasks as BILLABLE, because they don't inherit that quality when they are put into the project (this would also be nice).