So finally I get to answer to those two questions:
1 - C)
I understand the reasons for the rule, but I'm not in favor of a restriction that forbidds songs from the last 2 or 3 years. I think a reasonable answer would be to forbidd songs from the current year (as they have a exclusive and dedicated contest to do it, the Annual Contest), but from that year only.
Though I also like older music, that might not be the case for every user as some of you may prefer recent music, and I don't think that one should force other users to send older music just because I want to listen to a specific kind of songs.
I find my interest in this contest as a friendly oportunity to discover new songs/artists, and I honestly don't care at all if the song is from the 60's or from 2014, so I would clearly vote to change this rule.
2- A) not to follow the group, as I follow only my own opinion : those who win should be the preffered organizers, only if that doesn't happen a bid should be made. Why? Because it's a contest, and the winner should be awarded of course