User blog comment:LivesByProxy/Ward Variety & Sight Options/@comment-26815373-20160227062625/@comment-26313342-20160227113843

A ward which acts similar to the sensor structure for the Terran race in SC2 would also be nice (I forget its name).

Basically the gist of it is that the ward would be a stationary unit which does not provide direct vision, but instead alerts of enemy presence in a greater range, even through FoW (in SC2, enemy units within scan range that are not visible are represented by an exclamation mark).

The alert would be identical for any enemy units though, so individual distinction just through this wouldn't be possible.