I know I have to update the poll...just post if I missed something.
Option 1 - the user interface and what it can do
Option 2 - something that secures wallets even more so than now or is more apparent
Option 3 - sharing wallets, auto payments...
Option 4 - 6 confirms takes too long
Option 5 - the blockchain has too much data
Option 6 - dont depend on 3rd party exchanges such as Gox
Option 7 - eek, I want my bitcoin to be less fiat.
Option 8 - Too few merchants accepting bitcoin
Option 9 - smartphone is the future!
Option 10 - Target the shadow economy...Silk Road, etc
Option 11 - I hate hoarders
Option 12 - For the good
Option 13 - I want to buy with Paypal arrggghhh
Option 14 - I cant trust no one...
Option 15 - Make it easier for more programmers to dig in
Option 16 - save the world by saving bitcoin's price to other fiat currencies
Option 17 - not sad, but I wouldnt mind a better forum
Edit:Added Option 18: needs Public Relations