Finding Dory: what will it be?

With Disney now calling alot of the shots for Pixar, one of the things we can expect is sequels; and one that we will be seeing soon is Finding Dory.

 If it's a sequel:

Disney has often gone for the straight to dvd cash cow prequel route, but given the success of the Toy Story franchise, it seems like Pixar really know what they're doing in terms of sequels (I try to ignore cars).One thing I've been wondering is where exactly they're going to go with the story. Ultimatley they might just go with the same kind of plot as the first movie, only now we're finding Dory instead of Nemo, hence the title.That wouldn't be the most interesting story, but it doesn't really sound that unlikely. 

Maybe we'll see what kind of life Dory has been living since the previous movie, She said she remembers things better when she's with Marlin, what kind of things will she begin to remember?

(If they force a romance between Marlin and Dory and make a "Hey kids, if you only have one parent there's something wrong with your family" type thing, I'm gonna be annoyed)

Maybe Marlin will have to make the same journey across the ocean that he did in the first movie, Maybe a now older Nemo will have to go after Dory instead. Maybe we'll run in to Dory's family.....

Wait a second.....

There's something interesting. 

Dory's family.

"Short term memory loss. It runs in my family, atleast I think it does.... hmm, where are they?"

"I look at you and I'm home"

Could finding Dory include Dory finding her family or could this story actually be a prequel?

If it's a prequel:

Now, I don't usually like prequels; I feel they can often lack tension because we know they will have to end in a way that leads to the original, so if it looks like something terrible is going to happen to Dory.... well, we know it won't, unless it's amnesia. Despite this, Dory's backstory could be quite interesting and possibly the better idea.

Think about it, we have a fish with short term memory loss who doesn't know where her family is and can speak whale and read the human language; something interesting must have happened in her past, the question is how daring are Pixar going to be about it and what can they get away with under Disney? The prequel approach, like mentioned, would mean ending where the first movie started with Dory not being able to remember her family and being on her own assumingly because of it.

With the non idealistic and less cheery tone they took with Monsters university in terms of character plight, they might just do the same with Dory. Dory's story leading up to the original movie could be quite a sad and tragic one for such a joyful fun character, but that sends out a good message right? When life gets you down, just keep swimming!

Dory is clearly sad about not being with her family and misses her home, where ever that may be. Whatever may be the case in a prequel, there will have to be the inevitable tragic separation of Dory and her family in order for us to end up where the original began.

Poor Dory, she's so carefree and happy (maybe because she can't remember alot of bad things), it would be interesting to see such a sad backgound story....

Or maybe I'm overanalysing and they'll just go for the sequel....

The backstory possibilities are interesting, dammit!