My bold predictions:

1)Arise, Meteor, eventually Massacre Elegy, and Cat Sith summon - possibly more to be added later for RDM and SCH - will be new "relic scrolls" as the magic counterpart to relic weapons with the idea of few people having access to them.

2)Final VW boss will be flippin impossible without 6 SMNs rotating Perfect Defense for zerg. Even then you will lose at least 50% of the time due to a random deathga type move that kills you deader than hell. Said boss will drop 1 item that goes towards the magian trials for relic spells/song/summon and will cost a shitzillion gil to complete. Because why bother with quests when you can just Magianfy it.

3)Also said mega finale boss will be set up so that it cannot be spammed endlessly. For example: Shinny boy. Requirements to purchase KI to battle mega finale boss: 100,000 cruor.

4)Inevitably have 0.0001% of the population proclaim how easy it is and dive head first into the new time sink because making a shitbillion gil and spending it faster than you can make it is very very fun. It's not like you have anything else to buy anyways.

5)SE announces that they will not change things because 3 people are already working on the scrolls after seeing what the trials entails via the TEST SERVER.

Because this ain't your sissy assed WoW or Aion or EQ or EQ2 or STO or SWTOR or DC universe or LotR. This is FFXI. And it's your second job.