I have faced problems with specific reasons behind rejections in almost every single upload I have attempted... Either they give a vague 'server response' message or else it doesn't give any reason at all and says 'do not try to upload this again'.
What I feel is required as a fix - some staff that respond directly on a case-to-case basis with those people trying to upload in order to create a broader understanding of the guidelines and save everyone some time in the process.
One example is that I spent about 4 hours trying to upload my body, then had worn it for about 3 months before some one with entirely different criteria (I am guessing?) decided to delete it... not giving any reason... and refunding only half the cash I put forward to get it in the first place. I never got any return of the initial cash, had to spend more again, in fact, to re-upload it... It really bothered me that they could just do that without having some kind of authorization or giving some kind of dialogue to express to me why my hand-made, personalized graphic that I spent days drawing, then hours of frustration editing in order to get it accepted, was deleted after literally months of use...
In summary, I want to see upload reforms...