As long as I understand some songs are extremely close to 30 seconds and the BNs and QATs might turn a blind eye on such cases when these are official TV Sizes or cut versions, mapping something that is as short as 25 seconds is quite a weird idea. I do understand some songs or melodies are very short but with tendencies our community has in a year or two we are going to be mapping 10-second audio samples instead of legitimate songs, so I'd rather we stop on 30 seconds. If somebody wants to map those samples, sure, just loop them so they last long enough. Extending songs for the sake of ranking it is not that dumb if someone wants to map a song and rank it because they like it and the ranking criteria say the drain time must be equal to 30 seconds or more.