I sometime think Frontline is just one of the PvP area meant for new player to enter PVP, which mean morale will maybe never work there. Developer might make more PVP zone in future where morale work instead? People who want work hard for rank and gear will go frontline and maybe all who already Rank 40-50 can go to the other PVP zone in future? This just random thought.

Frontline is fine right now without morale and is no problem.
Only problem is people say no use for PVP gear but this not true if watch latest live broadcast.