I'd like to keep the Herald of the Battlefield feat as is, but have the additional effects as "add-ons" that need new feats.
True Terror of the Battlefield (Bardic Music, Tactical)
You have learnt to harness your battle skill to increase the terror you inflict in your enemies when fighting.
Prerequisites: Str 13+, Cha 17+, Bardic Music, Cleave, Great Cleave, Herald of the Battlefield, Power Attack, Intimidate 15 ranks.
Benefit: The True Terror of the Battlefield feat allows the use of three manoevres.
Improved Terror of the Battlefield: To use this manoevre, you must have felled 2 or more foes with your cleave attempts. Instead of making any further use of Great Cleave, you may spend 2 uses of Bardic music to terrify opponent within your reach into inaction. Every foe within your reach must make a will save (DC 5 + 1/2 your ranks in Intimidate + your Charisma modifier + ECL of the more powerful of the fallen foes) or become dazed for 1 round and shaken for 3 rounds.
Using Improved Terror of the battlefield uses two of your Bardic Music uses for the day. Improved Terror of the Battlefield is a mind-affecting, fear effect.
True Terror of the Battlefield: To use this manoevre, you must have felled 3 or more foes with your cleave attempts. Instead of making any further use of Great Cleave, you may spend 3 uses of Bardic music to terrify opponents within 5 feet times 1/2 your character level into inaction. Every foe within this range must make a will save (DC 5 + 1/2 your ranks in Intimidate + your Charisma modifier + ECL of the most powerful of the fallen foes) or become dazed for 1 round and shaken for 1 minute. These foes must be able to see you.
Using True Terror of the battlefield uses two of your Bardic Music uses for the day. Improved Terror of the Battlefield is a mind-affecting, fear effect.
Horror of the Battlefield: To use this manoevre, you must have used a coup de grace to kill a helpless foe. As a free action, you may spend a use of Bardic Music for the day to make a gaze attack against one foe within 30 feet. They must make a will save (DC 5 +1/2 your ranks in Intimidate + your Charisma modifier + 1/2 the ECL/CR of the foe you coup de graced) or become panicked for 1 round.
Using Horror of the Battlefield uses one of your Bardic Music uses for the day. Horror of the Battlefield is a mind-affecting, fear effect.
EDIT: Fixed typos, fixed formatting.
Scary bard....lol
Weapon Specialisation.
Interesting idea there Land Outcast. Keep in mind though that the average roll for 1d6 is 3.5, so you end up with a lot more damage on average. I'd feel better about the dice being d4s. While still higher in damage on average, it's close enough in power to the original feat while still maintaining some randomness.
1d6 = average 3.5 vs weapon specialisation = 2
2d6 = average 7 vs greater weapon specialisation = 4
Of course, if you're happier having a lot more damage output, that's cool, too.