When I play this game, I can't help but think of Ellie as a juno Ellen Page, altho she was voicing Beyond Two Souls. So who would play her, I have no idea.
Joey King from White House down is the right age, but please god, I hope they don't pick her, she looks unnatural, her lips look full of botox or w.e
As for Harrison Ford, he is a bit beyond it really. 71. Joel is a man with a 12 or 14 year old daughter himself. And the game is set 20 years on. So she would have been 32 / 34. So he would be somewhere between 55 and 65 ? Quite frankly when playing the game, I can not imagine Joel being out of his forties, jumping around surviving clickers and bandits.
Clive Owen is 50, and has done similar get the package roles, protecting a baby in shooter, and a pregnant girl in Children of Men. What would he look like with some stubble or a beard?
To get some game parts down accurate though, the actor playing Joel would have to get into cover doing his stealthy bit while the other members of the group continuously run from cover to cover even bumping into the enemies without them noticing at all somehow.