I think that highly depends on what they do. In its current form, you're probably right. If they add the right features, I think it could be big. What are those features? I'd speculate that the big one is letting people battle each other with the pokemon they've collected. Also, let them trade pokemon with one another and get them building teams. Give people a reason to interact with one another using the app, and they'll start talking to each other in these strange places they keep congregating.
> I'd speculate that the big one is letting people battle each other with the pokemon they've collected.
I haven't played Pokemon Go, but if you can't do this, what exactly are people doing in the game? Just collecting Pokemon and doing nothing with them? Honest question -- I had implicitly assumed being able to battle with collected Pokemon was the whole point.