I know special effects are on a whole different level now.But flying sequences can still look fake (Hancock) but if done well (Superman Returns) can go a long way in pushing the believability along. But I just hope the ring don't make baseball bats and birdcages when fighting Sinestro in the battle sequences.
Also hoping Oaa and the GL Corps origins are touched upon somewhat instead of the cocky airplane test-pilot meets little green man in the woods and gets this super-powered toy.