wow... soooooo much to comment on... HERE GOES!
first id like to say that Final Fantasy X-2 did a pretty decent job with their "songstress" class/skills....
lots of good ideas could probly come from there
for instance.... they have dances and then they have songs...
songs do semi-permanent effect (only need to sing it once per duration of the battle.. or... much like a spell with a time limit)
you could have a song that raises evasion (dex/defence skills bonus) one for strength and offensive boosts... defineately a song to help protect against spellcaster oppenents...
then you have some dances....
now dances could be neat because they could also be a form combative defence (the bard is dancing and dodging.. they will be more agile and can dodge hits etc etc.. ) with dances you can have the effect or whatever last for the duration of the dance... for instance one of the dances i loved on FFX-2 (hate to be referencing that for here but its one the best examples for bards ive seen yet) was a dance that casted haste on the party for the duration of the dance.. or... theres one that makes you score more/all critical hits when you do basic attacking for the duration of that dance... theres lots of neat ideas for temporary bonuses and boosts you can do with dances...
i see songs being more like spells (because often songs ARE spellbinding

) and dances being your more short term ritual type stuff (sort of like rite of success i suppose)
i bet you could even have some type of self-esteem confidence booster thing (skill/spell based charisma, intelligence that type stuff) where you motivate yourself (or others) for your next performance (itd be very much similar to a rite of success i think)
other parts of the bard guild:
yes you probly would have your basic bard songs/skills...but..
in a lot of MUDs or RP games bards are rogues... afterall i can understand... showbusiness can become very materialistic i can assume lol... you could have a type of bards that focus on performances and songs/dances (backrow partying) and ones that are the more acrobatic dextrous sneaky type (altho that might be WAY too closely related with shadowdancers.. so often as the rogue guilds are in MUDs tho... normally wherever theres bards theyre closely related to the thieves/assassins)
naturally bards would be able to sweet talk some deals.. so i think they should have the bargain skill trainable... and i bet the skill when used with bards could be for bargaining more than just objects being sold/bought in a shop... a bard might need to bargain for his life

he might perform something or tell stories and rumors that someone doesnt like lol...
and along those lines... about the rumors and stories and stuff...
are you referring to... like legends of how Aegis came to be?
im sure there could be some conflicts rising between Bards and Priests... as is most common religeous leaders arent very fond of the stories and explanations (specifically the religeously discrediting ones) that showbusiness and performance give to the ppl... on the other hand... theater DID start with religeon and acting out plays about the gods... just some stuff to keep in mind about what guilds may like/not like the bards (And who says they have to get along.. might just mean more excitement

)
ok thats a few ideas i had coming through when reading all those posts

for the most part everything yall have planned looks GREAT! just tossing around some generalized ideas and things.......
i also think itd be neat to toy around with bards being able to hypnotize ppl

... manipulation of the masses or individuals type of thing lol... itd be interesting to see a bard hypnotize a guard or political leader for whatever purposes (of course itd have to be for high levels)
and also i think very quickly bards could become a very powerful and wealthy guild... if you chose to make it that way... so there might be some limits youll have to keep in mind...
like having spells and dances that are useful and cool.. but you dont want them to be TOO convenient you know? and having a guild that trains ppl to manipulate and charm and sweet talk the masses would allow room for some serious "behind the throne" type of power from the bards guild... so i guess youll just have to be careful with how much influence and power over others bards have.. (im sure higher int/wis could affect how susceptible [spelling?] a player/npc might be to this manipulaton...) im also curious how tied the "manipulation" with the bards would be to that of the psionicists (i dont know a whole lot about psionicists or what they can do yet so all that goes without saying)... but yeh.. lots to ponder
everything sounds cool so far tho. sign me up for playertesting if youre ever looking for willing and able bodies
ill keep on thinking up some ideas and stuff....
but thats all the basics off the top of my head
lab