FGU function that given a light source tells me everything targetable in it.
If I could have an FGU function that returned a list of targetable tokens illuminated by an individual light source - I could do wonders.
Gimme.
For one I'd make a text interpreter that found all auras and assigned a light source for them that at any time I could call this "function" to get me a list a tokens I could then assign/remove effects to (aura effects). This way LOS is already taken care of and we don't even have to be aware of it.
Gimme. :)