The actor of arrow is in talks about the justice league movie, they already have green arrow, flash, wonder-woman and batman with superman, and they just teased green lantern being featured in arrow soon....
In a recent 'A R R O W' episode, Doctor Arthur Light/Doctor Light was mentioned to be working on a project in S.T.A.R. Labs before being fired cause of being a psycho. Soon after he was mentioned, a weapon that can manipulate light by causing it to become a energy blast was used. When Harold Jordan appears, he'll become Green Lantern by use of that technology's advanced form; a light manipulation suit. But, they'll put together the reason Hal's use for this tech causes green light. They could reveal that it's being energized by a ring shaped device that was found on the dead body of someone who crashed landed in a California desert and that the ring device couldn't become utilized by other volunteers until Ferris Air test pilot, Hal Jordan volunteers after losing his job at Ferris Air to do exciting things again. If WB chooses for connecting 'Arrow'/'Flash'/'Hourman' with 'Man of Steel'/'Superman-Batman'/'Justice League' etc, Christina Wren can appear in Arrow as Carol "Carrie" Ferris coming to California.
I know! it's great, I know dc take's there live-action stuff more slow but it's worth it! well see how they do Hal Jordan, maybe he won't even have power's, maybe he will. we'll see, Dc live-action universe is coming, but boy does Dc do some great T.v.
2nd: Gladly (According to Greg Berlanti) they haven't discussed whether they should be or not. Whether positive or negative; the reaction towards CW's 'Flash' can help them start that discussion. They'd know how to cause a connection to have more positivity than negativity.