One of the benefits of working with local clients, both large and small, is that we see a lot stuff. Recently we have been conducting a rank tracking project for a large national brand with 1,300+ locations. This has has given us some interesting insights into the move from the local carousel to the local fanny pack . Most often SERP changes, either algorithmic or feature based, get analyzed at the SMB level. This makes these changes seem monolithic and pervasive as you are just looking at several tiny slices of the picture.