Maybe through Aizen we can find out the origin of Orihime's and maybe Chad's powers. I've been curious why they manifested powers similiar to Vaizard and Hollows repspectively when Ichigo didn't receive either until later on in the story.
I'd also like to see a darker Orihime. At least able to kill an arrancar. So far I've been disappointed by how weak Ichigo's team has been. I assumed they'd be close to captain-level by now. I guess it's to show just how badass the arrancar and gotei 13 captains are.
I'd like to see Chad win a fight against someone who wasn't a total loser, though.