Neither current lore nor current class abilities will guarantee who gets what job.
As far as lore:85% of players surveyed said YES. We gave Yoshi-P permission to do anything he wants. Current lore being tossed out is not out of the question.Would you welcome changes to FINAL FANTASY XIV that would drastically alter the rules already set in Eorzea?
As far as abilities:Conclusion: Everything is on the table, lore and abilities can both be changed. THM could get ancient magic and BLM, or they could change their mind and give AOE cure back to THM with all of the status cures.Revisions to the battle algorithm has led to the need to redefine and redistribute actions, abilities, and weapon skills for all battle classes. As these changes can't take place concurrently with work on the algorithm, we have decided to release the list of changes planned for all classes around the time 1.19 goes live. The feedback we receive from players at this time will help to shape our work, which is scheduled for completion in patch 1.20.
My personal opinion: look at the amount of abilities that need to be shuffled around, CON seems best suited as WHM and THM as BLM due to all the status-nas, buffs and heal-agas being with CON and DOTs, drains and attack spells (minus nukes and AM) being with THM. As I said, they can go any way they want, nobody knows except for them and all we can do is speculate. Anyone claiming they know for sure is ignorant and arrogant.