Let's look at SE's track record in FFXI. FFXI raised the cap many times but only three level caps ever mattered; 50, 75, and 99. Relics became relevant at 75 and most people were unable to obtain them due to the cost, people, and time required for said items. Mythics were made as an alternative and for newer jobs. Once SE said they were raising the cap again people were legitimately concerned that weapons that took millions of gil and man hours to make were now worthless. SE assured that relic/mythic would make a come back with an alternative in the form of Empyrean. Relic did in Fact make a comeback with the i119 gear as did the other two weapon forms. Relic and mythic are even easier now than they ever have been considering the loosening of restrictions on related events. In short....you have nothing to worry about. I guarantee that whatever the 3.0 relics end up being, that they will tie into the 2.0 relics.