I have not used the site features to crop cards so I can't speak to that process. I did all my rotating and cropping on my computer before I submitted them. They all looked good to my eye, and someone else was approving them until one day I could finish the job myself. At that point, every submission of mine was all cropped and ready before I submitted it, so when the site allowed me to approve them, all I was really doing was double or triple checking that I didn't upload the wrong card or didn't make a drastic error. All the editing was done before uploading. That probably contributed to my getting permission quickly, that my submissions were clean and not in need of regular cropping.
I looked at the submissions for approval and I don't know if that was you submitting the ARod and other baseball cards around the same time, but I could see several of those submissions seemed crooked, that you could see parts of a darker border along one or two sides. To me that would seem like a card that was slightly crooked, they would need to be straightened out as well as have that border cropped out, but perhaps at that point an amount of the actual card would also be getting cropped out, so the whole card would not be present and I assume would be rejected.
Again, I don't know if that was you or not, but I looked at the process as do all the straightening and cropping before I submitted in the first place, as I wasn't sure how good the site cropping/editing features would be.
And to touch back on something you asked earlier, yeah submitting images for cards that the site doesn't have. It might demonstrate that you submit good images, but if you submit images of cards that don't need them, I would guess that you are actually making work for somebody to delete them as they aren't needed. Images they need is helpful to the site, and good clean ones (not needing cropping editing) make less work for others to approve, and the combination would lend to you being deemed responsible and trustworthy with doing your own approvals. I would guess that you could submit the best cropped pictures ever but if they don't need them that's just gonna get somebody mad at some point, having to get rid of them constantly.
Hopefully you'll get some good info on the actual site editing process. That's one thing I've found that is somewhat lacking, there isn't much in the way of actual examples on doing things, tutorials, so I've tried to be extra careful before I do anything in the first place. Asking questions and explaining what I've seen before doing anything that if I'm wrong is going to cause extra work for someone to clean up. I see that as also demonstrating responsibility so it may not earn site points, but I think it would reflect well on you to continue to inquire about the process of things as opposed to someone who just gets in there and wings it and messes up a lot.
Not a true card collector, but at times have collected cards in an ancillary manner to other interests.
