Approval for review of submitted cards as stated on the FAQ on-site says "Once your card is submitted, we will review it and notify you of its status, usually within 14 days."
As we all have seen over and over that sometimes this does not happen and may not be possible due to many factors of which I'm pointing no fingers.  With the new reviewers onboard perhaps approval times will change. But, we seem to be ever growing here and something for the artist to keep in mind, in my opinion, is the time frame of which we submit our cards.  Don't submit weeks or even a month before a holiday, especially a major one. Give lots of time for approval/corrections and stay ahead of the holidays.  
I don't know how you GCU folks review cards. If it is by order submitted or category/holiday or however. But I would think your job is overwhelming.  So, I decided to try to get myself on a better schedule for submitting cards and try to break it down allowing for more time before a holiday in the range of seasons hoping to spread the load so to speak.
 
Spring- Feb - May Holidays     } Sept thru Nov  
Summer- Jun - Aug Holidays  } Dec thru March  
Fall  - Sept- Nov Holidays       } April thru Jun  
Christmas/January Holidays   } July thru Oct  
 
Same rule would apply to everyday occasions. For example wedding season! June is a huge wedding month. Submit them by March/mid April. See what I am getting at? Leave plenty of time and submit 'em and forget 'em..or should I say submit 'em and sell 'em!!!    
 
Just thought I would share and hope it helps everyone in some small way.

I am already submitting cards for next Christmas because the review times have become so slow.
 
I submitted a card around February 5th (I am pretty sure of it) and it is still sitting there to be reviewed along with 13 other cards that I have added to it. It seems like they are getting slower and slower.  
 
The thing I hate is that it makes me look like I am not doing anything here. My store hasn't had any new cards added for way too long. People don't come back if they keep checking and seeing the same old cards.
 
It makes me feel kind of neglected.
 
Why can't they review at least one or two cards from every store, every week? Is that too much to ask?
 
I am not a complaining person, but come on!!!!!!! It's been over a month.  
 
Maybe by next Christmas, my Christmas cards will end up in my store.   You think?