Casting to look like the OT cast is unnecessary. Everything is essentially being retconned. Just find actors that not only hold their own but own these very characters. You want looks similar to the comic characters, but we don't need CGI or makeup to make them drastically close to their predecessor thespians.

good point, tho. Storm will more than likely be used mainly for her powers, to make the team bigger, and with some lines here and there, but yeah, I doubt he has a strong role. Cyclops and Jean have more chances to get a decent arc, imo, taking into account they have been gone from the franchise for a very very long time, so Singer may want to give them some spotlight this time around.