Something cannot be confirmed by "accident". The entry moderators and admins spend a lot of time studying a meme to see whether or not it should be confirmed. Also it is encouraged to users that if they feel that an entry that was deadpooled unfairly, that they can dispute and talk about their case.
Not only that but to "punish" users unless they're spamming the same image and spamming in the comments, is wrong because there's truly nothing you can do about the situation since they aren't breaking the rules. There's also the fact that when some memes start, people like to submit them early on before getting too popular to be the one to get it on here first. So it will take a while for it to get derivatives.
And the final thing to point out is that we should NOT close older memes that were submitted. I've been looking around recently and there are many memes that are popular and were submitted near when the new KYM came out. Such as the CD-I series of Zelda, Tails Doll, Bridgette, and so on. These were all submitted a while ago, and have not gotten work in ages. But that does not mean they aren't any less of memes.
The reason as well that these memes are taking so long to deadpool or confirm is due to the fact that KYM gets many new memes each day, and the mods and admins have to research, find derivatives, search, spread, origin and all that. And it usually takes a few hours to find that information, put it into your entry, edit the entry, add things to images and videos, so the old memes sit there until they get a chance.
If anything we need more moderators to deadpool non-memes or people to get motivated on trying to work on the older memes. Most of them were submitted during the old KYM format. Now the ways have changed and they are outdated and need work.
So I'm gonna have to say no to all of your suggestions.
And Laser is right, this should be moved.