Not so much who’s likely to still be regularly working - but who would you want to be?
Both Dakota and Elle Fanning.
Natalie Portman.
Elijah Wood.
Zachary Levi.
I was going to say Jorge Garcia, but he’s just past the limit at 38. Still, I hope he isn’t headed for an early grave or an empty future.
Chloë Grace Moretz: is it even possible she’ll still be this ahead of the game in decades to come? Probably not. But I can’t help being curious.
None of them–that would require my living another 30 years.
Why would you not want to live another 30 years? 
Emma Watson
AnnaSophia Robb
Noah Ringer
Celine Buckens
Because that would put me in my mid-80s, which I have *no *intention of seeing.
I am sure I have others but I am going to throw a name out there that may be controversial because a lot of people don’t seem to like him: Shia LaBeouf.
He’s picked a bunch of bad movies at times (coughTransformerscough) but he has a very natural acting style. I think he is a good actor and will probably only get better.
John Krasinski - He could be on TV forever, but if he continued to improve, there’s no reason he couldn’t be a leading man on the big screen. I can see him stepping into the likable everyman roles Tom Hanks has been cast in for the last 25 years.
Joseph Gordon-Levitt, Michelle Williams, Jessica Chastain, Anna Kendrick, James McAvoy, Jennifer Lawrence, Chloë Grace Moretz, Mia Wasikowska, and yes, Seth Rogan.
They all do good work.
Aaron Paul
Oh man, I came in to list JGL, so instead I’ll add Emma Stone. Love her so far in everything I’ve seen her in.
Also, Rosario Dawson should be getting better parts.
I think her parts are just fine, thank you, and they would be sullied if she tried to make them better. 