Listening to the Fanboy Factor Podcast and picked up these little nuggets:
On Ray Palmer:
-“He’s a change agent” for the show
-“We write him like we write Felicity”
-“There is a costume in Ray Palmer’s future”
-Due to the popularity of the show, they are able to think long term story-wise.
-They already have Oliver’s character arc for Season 4 planned. (My personal speculation is that THAT little nugget bodes well for Olicity’s long term prospects.)