I'm very into characterization -- I like details and good dialogue. I love when a fic gets down and dirty into a character's mind and shows me what they're thinking, not just what they're doing.
Here are a few of my favorite things: AUs of any kind, mission fics, slice of life scenarios, banter, dystopia, snark, developing relationships, hurt/comfort, POV shifts, forgotten mistaken identities, daddy issues, characters with dark pasts who are damaged but love deeply and have trust issues, people saving people, found family, team dynamics angst (I'm very big into angst -- if you're worried something is too terrible/sad for me, chances are it's not), BDSM, kink, porn (but WITH plot). Crossovers with other Marvel-type characters are also fine, if that's where you choose to go. I ship anything I list romantically as well as platonically, unless otherwise stated (aka, unless it's M/M slash, but I wouldn't ask for that anyway in my pairings.)
General turn-offs: mpreg, M/M (F/F is okay), PWP (not really a fan of shameless explicit porn without anything behind it), exceedingly fluffy fics (I'm okay with family/fluff/fun pieces and established relationships but nothing overly G rated, please), A/B/O, non-con
Clint Barton/Kate Bishop, Clint Barton/Jessica Drew
I'm one of those people who adores Clint and Kate, no matter the scenario. That is to say, I ship them as best friends, as partners, as his protege (as long as they're on equal footing and all that) and yes, I am part of what most people call the "special hell" aka I ship them romantically. You really can't go wrong whichever way you choose to write them. I'd love to see a mission-type fic where they get to really bond and learn from each other's skills the way they do in the comics. Or, if mission fic isn't your thing, a slice of life moment!
Clint/Jess: I love Clint and Jess because I think that relationship is so interesting. They worked, but they didn't -- and why? I love the dynamic that can be explored between them, the history that they have and the fact that even if they're not together, they still do care about each other a huge amount and Jess will always be there for him. (I can also take them romantically, whether that's in the past or if it's a fic where they decide they want to be together in the moment. I'm not partial to just "platonic exs.")
America Chavez/Cassie Lang, Kate Bishop/Cassie Lang
I LOVE ALL THE LADIES IN THIS BAR. America and Cassie...so many people (myself included) fixate on AmeriKate and that's totally fine but Cassie and America are so fascinating and they deserve to be explored more. America is someone who on the outside can be so tough, but I like to think that around Cassie and maybe other YA, she breaks down her walls and becomes a little more vulnerable. And Cassie is someone who is never really focused on in fics a lot, so I'd love to dig into her. I'd love to see Cassie and America on a mission together, maybe even just out together with something gone wrong where they have to work together and become even closer than they are.
Kate/Cassie: Best friends. Lovers? You be the judge. :) Basically, I love how close thier relationshp is, how they're the epitome of best friends and care for each other. I would totally read any type of fic about them being BFFs, or any fic about them being together romantically (how DO you fall for your best friend?)
Allison Beaumont/Jason Walsh
I have such a soft spot for this show. Jason Walsh is my heart, and I'm so sad that this was only one season because we never got resolution with Allison and continued that relationship. Clearly, from what was shown, they cared deeply about each other. What happened to them? Did they move on and get another job together? Do they work apart? How did their relationship evolve? Or, conversely, how did they meet in the first place and how did their relationship get to the place that it was in the show? We don't really know much about thier pre-Unusuals lives and there's so much that can be tapped into their, depending on what you wanted to do. :)
Sharon Carter/Sam Wilson, Clint Barton/Laura Barton, Sharon Carter/Steve Rogers, Sharon Carter/Natasha Romanov, Natasha Romanov/Sam Wilson
I realize I gave you a lot of potential pairings here, so I hope you're not overwhelemed. I'll try to keep it simple so that you can kind of have free reign. All of these relationships are fascinating to me in some way. Sharon and Sam are such a unique pairing but given their history and background growing up in the world they did and their reactions to recent events (and especially their life experiences after TWS) I can see them becoming close easily -- same with Sharon and Steve. I'm a huge, HUGE fan of Clint/Laura following AoU. I ship them and respect them and have had a lot of fun exploring what their life was like before and after they married, or even while Clint was off doing things in the movie. I want to know everything about them and I want them to be intimately involved in each other's lives. Sharon and Natasha are equals in so many ways, and yet at the same time, I feel like they would be the most interesting people to be forced together, because of their personalities and pasts. And Natasha and Sam...well, there's something to be said about shared life experiences.
For any of these pairings: I'm open to the fallout of SHIELD or Ultron things, or pre-AoU scenarios, or whatever you want.
Matt Murdock/Claire Temple
I love these two. They are the epitome of an OTP for me, in that one stumbled into another's life (literally) and they were forced to care for them. But there's clearly a bond between them that I hope will continue to be explored in the coming season, and I'd love a fic imagining what could happen with that. Or a fic set in Daredevil, some off-one scene where Claire and Matt meet up or have a talk.
Yelena Belova/Natasha Romanov
Natasha Romanov is my baby girl, the most important thing in my life and I adore her. Thinking of her early years in the Red Room, her friends and her history and her survival, is one of the things that gives me the most feelings. And of course, Yelena was a huge part of that. A post Red Room fic about them finding each other and reconnecting? A fic about them coming together while training and learning how to trust one another? I will take anything you throw at me.