I'm excited for the primal summoning system
Diabolo fight would be sweet. I imagine that theres some kind of hidden treasure room in Ul'dah Palace (one that a street rat may find a secret passes to lol) And find a magic lamp inside.

As well as summoner.
Summoner lesser spirts would be wayy better.
But who said lesser cant be one of the good ones.
Pheonix, Carbuncle, Ixion, Fenrir, Remora, Golem,

All of these are great potential lessers, and I doubt summoner job will have all of them right away.

I'm hoping to be able to pilgrimage as a summoner and go in cloister of trials.
Seeing as job quests get harder as you go on and you need more allies in them I'm sure you could muster up some guardians as well. ^^ The first few could be more friendly/passive summons to beat in an easyer battle. Like fighting carbuncle so he can deem your worth. (Also hoping to see some form of Reflect on carbuncle, if not a "Refract" that redircts attacks to another player)