I'm making a new thread for this because I feel the general misuse of galleries on-site needs to be discussed.
Okay, I think we're all well aware of the amount of gallery misuse on this site. Here, I'm going to be suggesting a few solutions. Most of them will involve making new functions, and since I have no idea of the abilities, time, or patience of our programmers, I'm speaking under the ideal situation where all these ideas are possible. First off, what I consider the most important thing we can add to this site is a button similar to the "Claim Authorship" button; we need a button, that any user can press, that says "Doesn't belong in this gallery."
Our biggest problem is that we're short on manpower. At the moment, clearing out incorrectly-placed images can only be done by the Image Moderators, and the Scrapbookers and Archivists can merely help sort them out into categories, along with normal users making long lists of URLs. The inclusion of this "DBIG" button would allow far more cooperation between users. Once an image has X number of "Doesn't belong"s, it will be placed into a cue. Personally, I would suggest that this cue be accessible by Image Moderators and Scrapbookers alike, and allows these people to edit which gallery the image belongs to.
Another thing I want to cover is tagging. Tagging is important, as it allows people to find specific image types they're looking for; as documentation site, it sickens me when people don't add any tags, or tag an image with the gallery's name just to have a tag. This is up for debate, but I personally think we need to force users to tag their images; that is, they cannot upload an image without adding, say, two tags. I think we all share the similar fear that some people will just put in garbage tags, but at the same time I can't help but think this would be beneficial. At the very least, include a little sentence near the tagging bar that says, "Include the name of the franchise or characters that are shown in this image, if any."
Then there is the problem of specific galleries being misused. Ruined Childhood, Childhood Enhanced, Reaction Faces, and Alternate Universe have been misused a lot lately. The following are purely my own opinions and are not necessarily reflected by the Know Your Meme community, but to me, Ruined Childhood is an image that, once you see it, cannot be un-seen, and retroactively alters the way you think about a show or view a specific character. To poke at a few images in the gallery, this doesn't ruin my view of Homestar Runner in any way, a thing that you hated or scared you when you were a kid doesn't count, things that are arguably funny don't count either, and Getting Crap Past the Radar in a kids show can be argued to be either Ruined Childhood OR Childhood Enhanced depending on who you're asking, so such images shouldn't go in EITHER gallery.
Alternate Universe has seen some misuse recently as well, mainly because everyone seems to have forgotten the the difference between Alternate Universe and Crossover. This is Crossover, this is Crossover, this is Crossover; the merging of two universes or more is a Crossover, people. However, there are occasions where one of the two universes takes precedence over the other; in such a situation, place it in the gallery for the franchise that's "dominating." I would argue that this much better belongs in the Team Fortress gallery than the Crossover one. As another example, this image is Adventure Time in the world of Attack on Titan. As such, I would argue that it can go in either the Adventure Time or Crossover galleries (preferably Adventure Time), but NOT the Attack on Titan gallery.
For flagrantly misused galleries such as these, it is my opinion that we place a warning/instruction page that the user sees each time s/he clicks the "+ Add an Image" button for a misused gallery, in a similar fashion to the page users see whenever they want to create a new meme page.
Feedback on this and other ideas are important, so please don't hesitate to give criticism. Also, I'd like to hear from the programmers just how much of this would even be capable, assuming it was all greenlighted.