Drop Down List as opposed to Full List for dashboard filtering?


Is there anyway or a planned approach to use drop down lists as opposed to full lists in Phocas for dashboard filtering? Here is why I ask…

If for example I want to matrix years of sales against customers and I have a full list that is not “focused” on - the page will take forever to load. If I was able to systematically select from a drop down a single customer or step through a set of drop downs (branch, outside salesperson, customer billto…) the lists would update based on the parent selection.

Does this make sense? Does anyone else feel this could be useful when building dashboards?