This sums it up for me really. It's a mish-mash of various elements seen before. I think the key for me was that the characters seemed extremely bland. Flashforward had a lot of problems but it did have some good characters among the duRAB.
Plot is all very well but my favourite US dramas of recent years (Lost, Damages, Prison Break, Fringe) have had strongly developed and superbly performed characters. I suspect The Event will be more about story than character and the cast as presented just don't appeal to me.