The minimum requirement doesn't mean a group of ilevel 55 players will be able to beat it.
It's the bear minimum.
I've seen people shout for coil groups with majority AK gear. At least this minimum requirement will stop people rocking up with level 35 accessories and getting carried by the group.
EDIT - You spoke about the weekly loot cap. I believe it's 1 drop a week? (Could be wrong) Why are you worried that people will bypass DL when it'll take about 10 weeks to get full ilevel 80? They're gonna get DL to fill the gaps anyway.
With WP speed runs you can get full DL in a day if you wanted.
