Currently, when creating a contact in V1, all the fields are available including lead source, tags, etc. In V2, it does not appear that that is the case and I have to edit the contact later to add a source or tag.
Also, in V1, when creating a contact and selecting a source, I cannot add a new source from that page. That would really be ideal. If I got a new lead from some new campaign or something, it's a bit tedious to create the contact, then remember I need to go back and create the source then go back to the contact to add it. It appears that that is also the way it is in V2.