Sorry . . . I posted this to the development group by mistake. Reposting here so it can be discussed in the proper venue.
I think it would be great to have an optional lattitude / longitude grid superimposed over the entire sky.
Imagine a faint grid of blue lines, rotating as you change your orientation.
The grid could be centered on the local system's ecliptic (if known . . .), the Sol system's, or aligned with the plane of the galaxy.[/i]