the idea is to illuminate game by game replay by showing what was your deck choice for each game
arguably one can always use the same 30 cards deck for all 5 matches but...let just say its more for the audience
best example would be this battle result (
http://elementscommunity.org/forum/index.php/topic,17351.0.html) which encompass everything that we (SG and I) hope to see
not that we force people to use this approach but personally, as a community member, that is the most interesting result i've seen because it shows everything that you ask (as an outsider) between 2 competing participants
at the very least, just showing your decklist means we, as the community wont have to hunt for your decklist ourselves (yeah, we're pretty lazy and wants everything fed to us...that is just how it is)