Frontlines is ruined by exploits, SE need to fix it

[Zyrusticae]

DDs focusing on a single target => DPS > HPS

This part of your equation is flawed.

HPS will ALWAYS exceed DPS, especially if the healers are unburdened with interrupts.

The only possible solution to a healer-heavy party is to have one DD each focus on one healer each, but good luck getting that kind of coordination with randomly matched groups!