I get wanting Nathan Fillion as Hal Jordan, since that's been the discussion for over a decade, but let's not act like this is a terrible choice, he's absolutely going to crush it as Guy Gardner. Some very odd backlash torwards this casting, imo. Is it really that big of a deal that Guy will be older than Hal & John? He always looked like he was old in the comics, pre-Geoff Johns/2000s. Fillion is 52. Affleck was crushing it as Batman in late 40s. It will be okay, guys.
My favorite GL is Kyle Rayner, I'm wondering if he will ever see the light of day in animation/live action. Would love to see Kyle vs Parallax play out one day.