I keep on reading a lot about how the expansion will require you to complete existing content, which itself I am fine with (I disagree with the decision, but I'm fine with it).

What I'm worried about is that I also keep reading about how it will be more difficult for newer players to complete this content due to the shortage of (experienced?) players available to help. "Good luck finding groups for XYZ when everyone is doing the new content!"

I was just about to pre-order the digital collector's edition, but now I'm not sure. If I'm being set up to run into a brick wall, I'd probably end up quitting, never even getting to see the expansion content.

Is this a legitimate concern? I don't think I will be caught up by the release date, so there's really nothing I can do about it if so. It would be nice to have more (perhaps positive) opinions on the matter, however.