This is a very useful feature indeed for the managers / super-agents. Most of the commercial help desks implement a filter pane or column filters which quickly help managers to filter the list of tickets within a particular overview.
Quick Column filter approach (I guess would be most easy):
Filter pane approach (probably additional complexity):
Quick Filters + Saving Filters approach, where users can use both quick filter on columns as well as save the filters into a drop-down list for easy pre-fill (definitely a complicated implementation):
I hope you can visualize the value such filtering provides to the managers - it really helps them be more efficient as they typically oversee hundreds of tickets managed by their team.
If this is a feature implementation that can be prioritized by payment, may be we community members can do a crowdfunding campaign 