I think it is obvious that Ulquiorra is Kubo's most thought out Espada. He certainly is his most developed one. I hope that means this battle won't be the end of him. There are so many places this battle could go...some would be most heavenly Ulquihime (Orihime teaching Ulquiorra what a heart is, Ulquiorra being redeemed) and others I wouldn't like so much (Orihime physically fighting Ulquiorra, Ulquiorra dying). I'm on pins and needles waiting to see what will happen.