Wow. Okay, maybe the death threats are going too far.
I'd destroy the Nelvana headquarters, but I definitely wouldn't start a mini-holocaust. They deserve despise, but no one, never, ever deserves death. ESPECIALLY NOT FOR A SHOW THEY MESSED UP. How trivial.
Now calm down, people, we all hate Cardcaptors, but we shouldn't hate Nelvana to this sort of extent. And to help you people, the chances of them grabbing the Tsubasa license isn't really high. Tsubasa has plenty of sub-animes within it, and in order to do Tsubasa they'd have to get the licenses for the other animes as well.