Buff Berserk's damage bonus

That's how berserk looking at rn for reference.
In-order for Dark Knights to unleash real damage they have to maintain their HP below 55% which isn't that-that hard for around 30k hp dks but a lot of people tend to struggle with it especially zerk20 users.
Heroes per say, holds one key without focusing on maintaining their hp at a certain point and still some a bit more funded than dks can out-damage dks.
I feel like dks should be awarded for their effort to keep their hp at below the required amount to activate zerk, and for the pot mesos we waste.

We're one of the worst dpm class even though we waste more mesos on potions (most of the dks use melting cheese which is 4.5k mesos per one and in bosses almost every hit uses up a cheese) plus we put more effort into maintaining our hp at a certain point which includes making sure we won't die.
And we still get out-damaged by most classes.

A certain buff will be nice to have :]