Ghost of Christmas Future wrote:
. Problems with the theory is 1, British accent and 2, why not have Quinto play the other, evil twin?
OK good points, valid problems, but that doesn't entirely discount the theory. There are always holes in the plots but the actors and director pull us over those hole with action, acting and effects. Abrams might have decided he wanted cumby before he even had a script or a villain. And while twins have historically been played by the same actor, they have been significantly divergent from their counterparts. Consider spocks beard or kirks sweaty mascara, lore's cod piece. I think cumberbatch would work as an evil twin for either kirk or spock. The scenario for the twinning event would just have to be written to explain the differences.