As I was playing earlyer, trying to roleplay a reason why my character once-again joined the College, I thought of a wonderful idea. My character could be a spy. That would have been an epic questline for the Bards College. Bards make the perfect spies as they can be anywhere without arousing suppision. There are plenty of other fantasy games/books/movies that envolve bards as spies or informers.
I thought, that after joining the College, Viarmo tells you to deliver a poem or tome (anything bard related really) to a man in some other city. As you make your way to the city you are stopped by some bandits/Stormcloaks/Thalmor, whatever, and are asked to hand over the item, if you refuse they attack you. After running away or defeating them you deliver the letter and return to Viarmo to ask why you were attacked. This starts the Bards questline, where he informs you it was inforamtion concering some sensitve millitary documents. After this you are asked to continue spying, using your position as a bard to earn axcess to certain places, like the Thalmor Embassy quest, where you enter the party or meeting as a bard, then sneak into someplace to retrive the information needed.
Special clothing and weapons could be given as rewards, along with perks to increase your speech skills for completing certain quests.

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