Mainstream user adoption with a safer/simpler way for non-tech savvy people to buy bitcoin.
It is very difficult to convince non-tech people to adopt something new that they haven't heard or used before. They would rather prefer to stay away from it or would choose some alternate option for investment on which they can trust on so the mass adoption is very necessary to reach it upto $1000 or more.
This is a basic fact of life. It's always hard to try to get people out of your confort zone. It happens to everyone. With the internet it was the same. How many people missed lifetime boats because of that?
But history will put Bitcoin where it belongs regardless what the common folk think about it now.