What about Mystic Knight?

[Kemonologist]

That's silly to say. With Red mage will be a magic dps, so if it comes to what we "need" we'll be getting a physical ranged.

That is one dimension. They still have term of gear sharing theme and status too.

For status type term:

VIT Class - PLD WAR DRK
STR Class - DRG MNK ???
DEX Class - BRD NIN MCH
INT Class - BLM SMN RDM
MND Class - WHM SCH AST

For gear sharing theme term:
Tank - PLD WAR DRK
Heal - WHM SCH AST
Ranged Magical - BLM SMN RDM
Ranged Physical - BRD NIN MCH
Light armor melee -MNK NIN (even they use different main stat but they share same theme, def value and fast pace attacking)
Heavy armor melee - DRG (Higher def than striking and scouting, slower attacking)

When counting order of new job:
2.0 - 1 Caster, 1 Heal
2.4 - 1 DEX Melee
3.0 - 1 Tank, 1 Heal, 1 DEX ranged
4.0 - 1 Caster, ???
No any STR Job

If you check all aspect, STR melee DPS (especially Heavy type) should add the job for sharing their gear more than other job that have 2 or 3 jobs shaing it already.