Re editing intros. I think this could be a good idea however I would have thought that any musician other than absolute beginner would have edited their song to remove all the waste material before posting. I have heard numerous songs with several seconds of hiss before even the intro kicks in. Some intros are SO LONG they are songs in themselves. LOL
It is all down to thought and professionalism. I usually mark these efforts down. IMO quality of recording is an important a factor to be considered in this comp.
I have said it before but some people obviously spend more time care and effort on cover photos and graphics promoting them and their song than they do on the writing, performing and recording of the actual song.