Easy solution: Party Finder+Invite FC/LS friends. Seriously, the marks were intended to be taken down by a full party at S-rank, light party at A-rank, and solo at B-rank. If someone can't pull together a full party for an S-rank, they have other issues. Also, all those casuals who only play weekends can BAND TOGETHER and fight the mobs as party. People who aren't really into hunts could also easily be convinced to help someone out on just one mob. If they REALLY can't get enough people to do an S-rank, then do all the B and A ranks. The way it is right now, it's still hard for casuals to get credit in hunts, so this really isn't making the situation any worse for them.