No, we do have enough content

[YukioKobayashi]

since when field exploration are more than glorified fate farm ?

Because its more than that lmao x)
BA,DS,DSR,Duells,Unique Actions ect
If you only go in there to farm fates its on you.
Maybe try joining some "clusterfarm" partys in the next field exploration, socialise with other people and experiment with the new actions you wont have outside. It can be fun.