Re: Should they introduce Kara Zor-El in the sequels?
I'd love to see a third film with Darkseid coming to earth, as well as Kara's ship. That way we'd have a balance of evil and good.
This would also give Superman an ally to help against Darkseid.
Having Jason in the film really neutralizes the opportunity to use Kara. The reason is that Superman takes over that surrogate mentor role, and a lot of the things that they could have used for Kara end up being used for Jason.
Really IMO it was incredibly goofy for them to bring Jason into the mix. Many people I've talked to in the real world echo this is as well, and agree with the idea of having Jason really hurts the chances of bringing Kara into a Superman film.
"If we die, it will be for glory, not for gold..." - Beowulf