Gone, replaced by something better that doesn't require constant hashing/wasted energy and ASIC computers to keep free. The smartest people in the world are not yet even involved in Bitcoin. Bitcoin is leading the way, but I doubt it'll be the end all solution.
I wouldn't be at all surprised if you end up being correct. Bitcoin is an amazing concept and idea, but it's not out of the realm of possibility that someone will take the concept of crypto p2p currency and make something even better than Bitcoin in the future.
To answer the OP's question:
* I would like to see better/more stable exchanges. I still feel current exchanges are very amaeture, I think the problems with mtgox recently has only helped confirm that.
* I would like to see bitcoin a lot easier to use and more secure. I talk to too many people who don't get into bitcoin because it's simply too complicated for them and they would also most likely do a very poor job securing their wallet(s).
* More stability. The roller coaster ride has been fun and all but bitcoin will never be a realistic CURRENCY until it becomes stable like a normal currency is. Until it's more stable it will be a commodity/investment and not many people or merchants will have a desire to use it as a currency
* More merchants accepting bitcoin....of course I feel for this to happen a couple of my other complaints will need to be fixed (more stability and ease of use) before more merchants start accepting bitcoin.