Task View - Add Folder Structure

Several of our clients manage the same repetitive tasks through task view lists as this is easier then managing the tasks by accessing the projects. Now, the client has several task lists (see attached) and we request that you add a folder option to the task view lists in which you club similar tasks in that folder. It will make finding the tasks easier.

Current flow - user goes to task view lists and searches for the appropriate task view (if you have more than 10 task views, this will be a more difficult process)
Requested flow - user goes to task view lists, find the appropriate folder (to which the same tasks are mapped), and looks for the appropriate task list.