I think it is fair to point out that the starting level 70 gear was actually the the Arahat gear and Crimson Lotus weapons from the Ala Mhigo Dungeon. The i290 Antiquated gear was a very minor upgrade between the i288 Valerian gear and the i300 Arahat gear. DNC and GNB both received Crimson Lotus weapons so there was no actual need for an i290 relic set.

From the looks of it they may already be planning to do what you want for the new jobs in 6.0, at least for level 80. Those new jobs will likely be getting i430 repurposed Weathered "Relic" gear sets from Grenoldt as entry level 80 gear.

The "Chemist" healer is likely going to get versions of at least one if not two of the Alchemist sets.