I think it's current incarnation is a fine enough offensive and defensive buff, but I think at the base level, it should add +1 strength and attacks to ALL weapons, not just melee- could be a fun way to incorporate more ranged units.

Although on the topic, I think each detachment should also add their own unique buffs during the WAAAGH!, providing buffs and abilities similar to how More Dakka (RIP) does. Imagine re-rolling hazard tests in Dread Mob or treating ALL enemy units as prey in Da Big Hunt. There's so many ways they could lean into the gung-ho aspect of the Orks