My take on the ancient languages is that they will most likely use the Bardic skills to decipher a language that could lead you to riches, power, or maybe even a safe haven that has not been touched in hundreds of years. The possibilities with just adding in a deciphering skill are endless. Having the ability to read things that not everyone else can also makes your skills marketable. For example, you may want to sell this treasure map for a steep price, or maybe you are working for your king and the safe haven becomes a refuge for a retreat from an enemy attack. It could become your new kingdom or base of operations to regain your land. After all, they did state that you could destroy anything anywhere, which I would also like to assume means to build anything anywhere.