^Yeah, I'm going to give the writers the benefit of the doubt. The show is about the guy who becomes Superman, not Superman himself. So you can't have him complete the final part of the journey if there is another season coming up. Maybe with this being the last season, the final transition will happen without it being drawn out and avoided at the last minute.
Biggest question of season 10 for me:
How does Clark pull off suddenly wearing glasses and no one remembering what he looked like without them?