Lyanna Stark is at the top of my list of characters I would love to write but I can play any range of the characters on the show. I tend to write a lot (at least 500 or more) and go plot heavy (smut can be included but not necessary). I tend to lean towards characters who are stubborn and impulsive but those are just my favorite attributes to write.
Bring me all the plots!
edit ~ I just finished rewatching the first season and all I can think of is an AU where the Starks win and Robb Stark has to marry one of Frey's daughters. Neither is happy with the arrangement but they make it work. Give me this and I'll give you all the peaches.