Rather than sticking to a single effect for the entire game, I think there's a far better possibility.
As you probably know, the song's effect can be overriden with 'Spell Effect: Change Bard Song Effect '. So here's the idea - bards receive several self-renewable innates that will change the song from one to another. Activating one will waste a round, but imo it's logical - tuning to another melody takes time.
Thoughts for song effects are mainly borrowed from NWN2.
Allies within 30' receive +1 thaco and morale. Bonus increases by 1 / 8 levels.
Opponents within 15' must save vs spells or be dazed for one 1d4 rounds. AoE increases by 5' / 6 levels.
Allies within 30' receive +1 AC and save vs death. Bonus increases by 1 / 8 levels.
Opponents within 30' must save vs spells at +5 bonus of fall asleep for 1 turn. Save penalty increases by -1 / 6 levels.
Allies within 30' receive 5+1/8lvl MR (up to +10 on 40th).
Allies within 30' are freed from curses and charm effects. The probability is 20% + 5% / 10 levels.
Allies within 15' receive +1 damage and save vs spells. Bonus increases by 1 / 10 levels.
Everybody with 20' must save vs spells or take 2d6 magical damage. Save penalty increases by -1 / 6 levels.
Opponents with 15' must save vs spells (+5 bonus) or be charmed/dominated for 5 rounds. Save penalty increases by -1 / 6 levels.
And so on. Kits will need their own lists. Other HLAs may include increased duration of the effect (Lingering Song), increased probability (save penalty of %) where applicable, AoE, power of effects, etc.
Edited by Ardanis, 04 March 2011 - 05:26 PM.