Mybe this is a little late...
I have start recently a quest(pathfinder rise of the runelord) I'am iconic Lem(so cha and dex based) but I'll gonna be a DD. I know it will not be the best character; nor for the melee, nor for the caster, not even for pure bard... But I love the Dragon and Love the bard that basically is good at a lot of things but not the best in 1 things...
So for me at 20 lvl, it will be, 10 bard and 10 DD.
I know that I'm not the character that will do the most damage, But I will do what it will be fun for me to roleplay.
still doing some of everything.
Thank you for the old post, It help me a lot