I'm not sure if your DM allows Unearthed Arcana or not, but for making things interesting I think it has lots of cool options. I like all three bardic variants (bardic sage, divine bard, savage bard). None are more -powerful- than the core bard, but they may match your style of play better, making them more satisfying.
If what you really want is a spellcaster who happens to focus on musci and information, you might see if your DM would allow the Prestige Bard from Unearthed Arcana. (I played a 3e character who had one level of bard and then went straight wizard, but kept Perform ranks maxed out for access to bardic abilities. That stopped working when the game went 3.5, but switching the character to a prestige bard worked perfectly.)