This was done thanks to a little boredom (admittedly). Nonetheless, enjoy.
Patriot/Eli Bradley: Lee Thompson Young. A fan favorite, what can I say?
Iron Lad/Nathaniel Richards: Cory Monteith. Yeah, I'm a fan of him in "Glee," and he's totally got the looks too.
Hulkling/Teddy Altman: Marshall Allman. I saw him suggested in another fan cast, and I have to say, it's pretty inspired casting right there.
Hawkeye/Kate Bishop: Kristen Stewart. Yeah, I know I'm going to get a lot of flak for this, but don't count the fact that she's in the Twilight Saga be a factor against her - Stewart actually is a good actress when she's actually got a well-written script on her. And unlike some of her contemporaries (Megan Fox and whatnot), K-Stew actually looks like she's got what it takes to really last in the business.
Stature/Cassandra Lang: Blake Lively. She's got the looks and is a pretty good actress herself.
Speed/Thomas Shepherd: Tom Felton. I've seen him suggested for Quicksilver too, but honestly, Felton is far too young. However, he's the perfect age for Tommy, and could use another role to distance himself from Draco Malfoy.
Wiccan/Billy Kaplan: Tom Sturridge. Okay, so while Billy and Tommy are twins, they are still very different characters with only a certain amount of noticeable similarities. Sturridge is a great actor, and he and Felton could play brothers perfectly.
Comments? Critcism? Feedback is appreciated!