Frontlines is just...boring right now.
A big reason is that 70% of matches are just the same. Some discord group comes in with 3-4 DRKs and some Dragoons and they obliterate the other teams.
PvP, especially Frontlines, hasn't been balanced for a while. I mean, I don't really expect them to balance PvP jobs when they can't really balance the PvE jobs either. /shrug