The single fight vagary bosses are too difficult for the intended audience (solo players in average gear).

These battlefields drop nothing, they are there purely for 119 Af3 upgrades.

They are not extremely hard for geared players but they are hard for players trying to unlock af3 119 in below average gear (especially the later ones). Getting help for these is near impossible, since they need buyable items to enter and they get nothing at all from it.

This was added as a way for solo players to unlock +119 af3, it is not fit for purpose.

You need to make these fights easier, especially since you just added Sortie.