I've been keeping track of this Kingdom Hearts fic for a few weeks: http://www.fanfiction.net/s/8453704/1/Start-Game

I've already claimed it, but I kind of want to make sure I'm not overreacting.

Basically, an OC fangirl switches bodies with Ventus, and then both eventually go through the plot of Ven's route of BBS.

The main OC has a few potential Sue flags, but there's also some bits of fanon that make no sense (The most recent chapter makes Eraqus the head of an academy in a flashback.)

Browsing the Just In page of the Harry Potter section of the pit has brought these to my notice.

I'd probably say this one's just on the watch list: the grammar is acceptable and so far I don't think that the OC has racked up any major canon breakages, (other than the title "The Fifth Marauder,") and has somehow become friends with Lilly and Snape, despite being pureblood and two years younger than them both. (The given excuse is that they all live on the same street... or something.)

http://www.fanfiction.net/s/8558109/1/The-Fifth-Marauder-Teaser

Also, doesn't the pit of voles have a policy against making separate stories for "teaser" or prologue bits that should go in the actual story? This was posted today, but labeling it a teaser smacks of not having read the rules.

The next one is a grammar-deprived mess. It gives us mention of the mini-Aragog Grodrics Hollow (does he belong to anyone?) as well as baby Harry described as a "lovely angle" and the first chapter consists of dialogue. Actually, most of it is whiplash-inducing pacing and bad dialogue.
http://www.fanfiction.net/s/6814846/1/Arranged

The third I hope is a parody, because the OC is part demugise. Yes, you read that correctly. This one is also a "Teaser," and I just now checked: it's from the same author as the first OC. The grammar remains acceptable. Roxora appears to only have the charges of being an extracannonical offspring, an unholy demugise hybrid, and interrupting a fight scene to give us her life story. Also, the author appears fond of the name Alexis. Like the first fic, I think this deserves watching, but it only has one chapter right now.
http://www.fanfiction.net/s/8558082/1/Roxora-Alexis-Lupin-Teaser

I'm not completely sure, because I don't recognize all the names mentioned, but it looks like he took a bunch of characters from different fandoms and has created an impossible web and back story for them. Starring in the show would be his OCs, the one named James being the most prominent and definitely the most 'Stu-ish. Some of the lines that concern me would be:

"James is the doctor Adopted brother he is the Master Assassin but he never kills"

"when is family was taken he was taken sort refuge on the planet of Pandora where he lurned the Na'vi ways he lived with a clan called the omaticaya he was well respected in the clan."

"Amy is James best friend when growing up ( lets kill Hitler will explain) but when he moved they lost contacted they went to the same school but thanks to the doctor there friendship as bean lifted once more."

"Joseph song is the doctor son he was born on the planet of sholon through the DNA from his farther and mother. his life starches from the 21st to the 51st century he travels in his own TARDIS and his own companion in the Name of April smith ( Joseph song Adventures part 1 coming soon) he has the madness of his farther and the brains of his mother but can Joesph song become the new doctor ?. After the events of demons run Amy pond is now his grandmother and Rory his grandfather"

The main universe seems to be Doctor who, but as there is Avatar and, looking at other fics, Assassin's Creed, Family Guy, Being Human, Thor, and the Avengers. This being a series, it's probably going to be a big job, not to mention that Floaters will have to take care of it because it contains both 'Stus and crossovers. Either that or it could be a combined mission, as there's certainly enough for everybody.That's just my input though.

~TO, who has found enough people calling her this to make it a sort of signature.

What? I literally had to read that about four times to work out what he meant. This is either a preteen or a troll. It has to be.

The spelling and grammar make me want to send the Stu on a blind date with Maaga.

That's not a very promising way to start things off, no sir.

Thunder, do you need some Bleepolate? -offers some-

First we cut him into pieces, then we set him on fire, and then we feed him to a group of Adipose.