Do you think they'll cast Voldemort twice?

Like how they did in the films? It worked fine enough in the movies because Voldemort is basically a bit part in Philosopher's stone, and obviously he's supposed to look messed up/corrupted enough at that point, that his face and voice will be a bit different when he's resurrected in Goblet of Fire.

Realistically, do you think they'll make the same move and recast the actor the same way? Obviously everyone wants continuity, but it's difficult to imagine them picking a big-name actor to commit to a type of role where they appear for 10 minutes in the first season and then basically disappear for another 2-3 years of filming before the 4th season comes out. Logistics and everything. Not saying it couldn't happen, but it is unusual.