It opens a nice opportunity for minimum item level / relive the past runs. They could add unique special items which only drop under the min IL setting to incentivise that kind of play; it would make years worth of old content feel new again especially for people who weren't around when player IL was originally more restricted. Could also have a weekly rotation of a few specific duties which get greater min IL bonuses to narrow the focus of party finder. Make weekly targets very visible on the DF, just like how daily roulettes have their own tab/page. One of the optional paths to progress a 'relic' weapon could include min IL participation. If minimum level is too harsh, add a new DF setting which is slightly higher IL sync than the minimum but still provides an experience close to the original difficulty of those fights; this setting would be available on DF matchmaking solo queue, so PFing won't be necessary.