Possible smn,blu,beastmaster play idea
I really liked the way they did yuna in the original dissidias where it was an attack that opened little portals in melee range and the summon would pop out and make an attack then the portal would close.
Could work for smn, blue mage, or even a beast master to a lesser extent
With smn you could even keep current egis and this could be used along side them while adding more primal attacks/effects maybe needing a aetherstack to use, extra dots, buffs, debuffs, ect. This would feel more like the classic summons that pop up do damage and vanish, while stI'll feeling fast paced and rewarding.
Blue mage would be similar in that beasts would pop out and use spells like mighty guard, ect.
Beast master could work but honestly I wish they would go more along the lines of druid type shapeshifter class like wow.
Below are each a quick video showing what I mean.
https://youtu.be/V9dqTMUMtGY
https://youtu.be/V9dqTMUMtGY