I don't actually think it will. It is slow, but that is something we can adapt to and they may fix, but ultimately that is the least of its problems.
It's biggest problem is the miner fees for moving currency around. It doesn't matter how fast it is, if those fees remain ridiculous like they are then it won't remain at the top.
Right now it is only good to treat it like Gold and let it just sit there. It is stupid to use it as a currency because of those fees.