im sure we will see more merchand avaible in offline market.
From my point of view, that's one of the keys for the success, i mean, that people need to use it more, that's all, the more merchants, the more people involved, so simply, and simply, must be the way to do that... oh wait, now is really simply...
The other point is, how will evolution the bitcoin, for sure, bitcoin will need some changes in the future ( changes that we need now, and changes that we still dont know for future problems...), if things will going like now ( really good ), then our currency will have a great life