Nifft said:
IMHO Bardic Knowledge is weak.
YMMV.
I think this is definitely an issue where it depends on who your DM is. I know lots of DMs who, after going to all the hard work to come up with the details of their campaign world and adventure, are going to make sure the PCs get that information no matter what. In such a campaign, bardic knowledge is nothing more than an avenue of opportunity for the DM.
In my campaigns, OTOH, I feel no compulsion to give the PCs access to information they wouldn't have access to. Players in my campaigns quickly learn to invest in Knowledge skills and Bardic Knowledge is insanely useful (the information it's capable of uncovering being equaled only by spells like
legend lore).
Parties that don't invest in those resources find that they're either (a) severely disadvantaged or (b) paying the large fees demanded by sages.
With all that being said, I think Bardic Knowledge could be appropriate as either:
(1) The end of a feat chain with 1 or 2 prereqs (probably Educated and maybe an appropriate Skill Focus).
(2) A stackable feat. Taking the feat would give you a bardic knowledge check of 4 + your Intelligence bonus or give you a +4 bonus to your Bardic Knowledge checks (if you already had bardic knowledge).
What makes me suspect it's not worth a feat without prereqs is that it would actually give you an ability BETTER than the class feature (since it would not be dependent on your bard level, but presumably your character level).
Justin Alexander
http://www.thealexandrian.net