I’ve had plenty of items rejected, and also worked on some of them more and got them approved. You should look at it as a learning process. They know something about the kind of items that customers want, so if you’re making work for Envato you just have to make sure it’s at the Envato standard.
On Topic: These logos look great. I can only guess that their usage is possibly too specific, or the concept wasn’t considered sellable enough… I’m just guessing to be honest, but visually they look good enough.
Believe me, I know how frustrating rejections are, I just got a flyer rejected that I really thought was good enough. If the resubmission is rejected as well, I’ll start to agree a bit more with Ivan. 