We can have the best RBs in the league, but if our O-Line can't create push/running lanes, our RBs won't be a threat. Same goes in the passing game. If the O-Line, with the help of RBs/TEs, can't pass block, Foles won't have much time to get the ball to our receivers. So, it reality, it all starts with the O-Line, plain and simple.
I mentioned it in another post, if it's going to take time for the offense to click, keeping it simple is best. The defense and special team's play need to keep the games close which hopefully will take some pressure off the offense to score a bunch of points, or play from behind with large deficits.
Our skilled players have great potential to be very dynamic, but I think it's going to take a bit more time until the O-Line starts to gel as a unit.