How should we improve Labels in Planner?

I use the Planner to manage a work 'pipeline' for a team. I use labels to be able to select appropriate views for different audiances. By Supplier or by works area and also to focus on work targeted for completion in the current delivery period. As there are so few labels then I use a hash tag in the Task title together with the text search filter to focus the view on differnet works areas, projects, work-packages etc. But I would rather not have to use this method as it is not possible to OR as it is with the Labels. I would like to have n+1 labels. The current visual layout is fine for me. I need to restrict others from changing the labels. I would like to allow users some freedom to add 'user' labels for particular uses. Thanks