What is the outline of "certain level of professionalism"? Curious...
One thing are your "paid" submissions that seems to me that they are more a marketing ploy than a real submission, but there is also some bickering that are made public between disgruntled customers and developers where I think xF should have more defined guidelines and routines (not saying you can't complain, but public bickering usually aren't beneficial for the customer or the developer, which also extends to the posting in the forums).