1. these road classification changes are a bit controversial, I'd encourage you to discuss changes about why you believe they should be changed. In the meantime, I've reverted these changes in https://www.openstreetmap.org/changeset/166756107, however retained the correct addition of lanes=2 and surface=asphalt, 
2. https://www.openstreetmap.org/node/2820113434 was an address node and had the bus stop tags moved to it, given the address was for the house and there was no reason to loose the history of the bus stop tags.
3. https://www.openstreetmap.org/way/5168728 appears to be a 2 lane road. lanes=1 is very uncommon for a two way road.