I did this a while back with a bunch of characters but I've had a bunch of great ideas since then so here we are:
1. Sienna Miller as Susan Storm.
Mandy Moore was my first choice but then I saw Sienna in a couple things & now I'm totally convinced. As for Emily Blunt, the personalities really never matched up.
2. Jai Courtney as Taskmaster
He's got the build, voice & could totally do Taskmaster's personality in the comics. If you've ever seen Divergent, picture that guy but a complete badass.
3. Jake Mcdorman as Richard Rider
I was watching Limitless around the same time I was reading a lot of Nova and the personalities clash really well. The whole capable, not totally qualified but hero person.
4. Robert Carlyle as Mephisto
If you've ever seen Once Upon a Time, you'll totally get casting him as an invincible trickster. If you haven't.....take some time & watch the show already, geez.
5. Luke Evans as Namor
I just mentioned this in another post but it really works. The whole ultra-intense rageful king vibe is really good on him.
6. Orlando Bloom as Adam Warlock
I don't know if someone else's already been casted but if not here's my candidate. After LotR & PotC, he could totally pull off the golden space Jesus role.
7. Julianne Hough as Dazzler
Duh. After watching Footloose & Rock of Ages, you could not convince me anyone else is better qualified if you had brainwashing tech.