Thought I'd mention a couple of things.
Dragonfire Inspiration: Not only can the feat not grant Force damage, but if your draconic heritage has no affinity or an affinity for force (or anything else other than acid, cold, electric, fire, or sonic),
the feat doesn't even do anything. Sonic is good, though; you can get it from Battle, Emerald, Howling, Platinum, or Pyroclastic. As near as I can tell, this would require a Sorcerer dip or the Half-Dragon race, although a Dragonborn may squeak by on Platinum dragon heritage.
Knowledge Devotion: May want to add it to the feat section, since you mentioned it in the description of Bardic Knack and also mentioned Collector of Stories in the skills section. (Duskblade player in our group looked at the wording and concluded that Knowledge Devotion triggers off the roll to identify an enemy, which is the roll that Collector of Stories modifies.)
Does Healing Hymn work with Cure Minor Wounds? Complete Champion mentions the bonus is to a 'roll', so wouldn't it not work? I guess it wouldn't work with Heal or Vigor, but would for Lesser Restoration and CLW.
Which one's better then? Healing Hymn + 2 Eberron Bard feats OR Fascinate, Suggestion, and Suggestion,Mass?
With limited healers in a dark campaign, I'm leaning for the former. What do you think?
I had Healing Hymn in a campaign where our primary healer was a Favored Soul trying to be a Sorcerer, and I found that singing for a minute before we tucked ourselves in for the night was terrifically useful. Combined with Healthful Rest (since the FS was trying to heal mostly with Lesser Vigor and fast healing is "like natural healing except"), that's 4xHDxHP each night. I considered learning Summon Elysian Thrush for 6x but thought that would be overkill as well as too much investment into a peripheral tactic. Although it's not explicitly mentioned in the ACF description, this should also increase the rate at which ability damage heals (since it's not specifically called out as only affecting HP healed and is described as having the effect of 24 hours of rest). This will also double with Healthful Rest or Summon Elysian Thrush, or triple with both.