Today, I happened to be within a short distance of one of the Targets (Union Terminal in Cincinnati, Ohio, US).  I didn’t bother taking a photo, though, for several reasons:
1) I thought wouldn’t be able to access a suitable computer before the end of the Blognomic day (it turns out I was wrong about that though!)
2) Even if I knew I’d be able to post the photo, there wouldn’t be enough time to negotiate with an active player for it.
3) The negotiation would have needed to happen before taking the photo.

Since getting proxies to take pictures for you is an intended part of the dynastic mechanics, I therefore suggest the following rule changes:
1) Idle Hunters should be able to sign photos.
2) There should be a mechanism for handing off a signed photo to another Hunter so that the other Hunter can capture the Target instead.
I was also going to suggest a longer than 24 hour grace period for posting photos, but that seems to have been covered already.