For Duty Finder they should Sync your iLvl to something more manageable for the lesser geared people when it comes to the Relic Reborn and Hardmode Primals. Tank can get in a iLvl 52? Then we should be Synced to iLvl 90-95. It'll still be dead in four-five minutes and the only people who would be slowed down are those that are Light farming Solo. But if you queue in as a group, iLvl shouldn't be restricted. Obviously later stuff like Extreme Modes, and the already iLvl 90 Trials wouldn't be affected, it'd just be for those who are newer to the game and trying to do the Fresh 50 stuff but get stuck with 120+ DPS who don't care about your threat.