Completely forgot to mention: I'd prefer these pages be created only if there's a load of images in the galleries. For example, maybe have around 30-40 images for a new subpage. I don't want a lot of subpages with only one or two images.
Also, I don't think the paths should be stuff like "Daffy Duck/Gallery/TV Shows/The Looney Tunes Show". "Daffy Duck/Gallery/The Looney Tunes Show" is better since it's a more logical path and the other galleries don't have that many images anyway.
Otherwise, I am 
Neutral - on this.