Great reports both, thank you.
1) IFE via wifi was rolled out last month across the entire Boeing/Airbus fleets (not E170 though)
2) Mobile BPs are now accepted in DME and some other airports and should be available across the country by the end of the year. Previously, you used to have to scan your phone at the machine next to security, which prints out the BPs. This probably took 10 seconds or so. You never had to visit the desk, or print at home.
3)S7 elite recognition is really good when you fly Y. Frequent op ups, free seat selection (including Extra Space seats), free baggage on HBO fares, priority boarding and delivery to the a/c by a J cl minibus for anyone Ruby or above. Flying in J however, I am not sure what kind of recognition did you expect.