[atlas] Categorize probes (feature request)

Hi! Depending on the measurement, sometimes I want a realistic "user's view" which means using probes in residential areas, and sometimes I want a "backbone" view, which mean using probes in the back-bone (good connected) e.g. to measure my access network or my servers without the delay introduced by the probes access network. Thus, it would be cool if the probe selection algorithm allows also to choose "residential" probes or "backbone" probes. Maybe this categorization can be done automatically, or probe owners can be asked to specify the probes connectivity manually. Thanks, Klaus