While I never touched on the relic series and never will (have enough to occupy myself really) I think streamlining the process would be required in the future expansions.

Faster FATE respawn for animus, cheaper Alex for Novus, and more light per instance for Nexus.

Animus would still be gated by other constraints, Novus still need all the materia, and Nexus you just need less time for the same process.

That would be a nice compromise for continuing on through the expansion and still making it achievable by new people.