If they're seriously rejecting games on the basis of lack of votes, then they really need to reconsider their curation policy. While there is a select few games that would see considerable success on GOG due to the tremendously high number of votes (like System Shock 2 did), other games don't necessarily lack votes because they are bad or disliked. Many of them are simply obscure and unknown to the larger body of gamers and, speaking for myself, it's always the obscure ones I've never heard of that interest me the most (generally, if it's a game I want and like, I already have it on disc).