I'd like to know what they intend to do with Ray Palmer. "Arrow" is a more-realistic universe, and they bring in the civilian name of a hero who can shrink himself to sub-microscopic size? I figure three possibilities:
1. They're only using (wasting) the name, and have no intention of his being anyone out of the ordinary. (Unlikely; they'd risk fan-base discontent, and they've shown too much respect for the source material to screw up like that.)
2. They intend to have him become someone other than The Atom as we know him. (Precedent:
)
3. He was in Central City when the particle accelerator blew, and actually is some form of The Atom.
Time will tell, of course, but they've done very well so far, so I'm optimistically hopeful, and look forward to seeing the situation unfold.