The big change is that with version 1.0 you looked at each rep one by one, swiped left or right, and then moved onto the next rep.
In version 2.0 you can look at all your search results before you start swiping, so you can compare the reps against each other before you start swiping.
We also have improved tools to save searches and maintain a list of reps who you contacted, who accepted your contact request, and who declined your contact request.