text: Hi, everything is fine. No worries about my comment. I just wanted to point out that adding/changing surface and/or smoothness will not cause the map to be repainted and you will not notice a difference on the printed map then.
  I'm also fine with your proposed tagging. If bicycle can still be pushed, then you might tag "bicycle=dismount" instead of "bicycle=no"
  
  Regarding "subscribe", no, there is no RSS or the like. What I usually do: I navigate and zoom to the area of interest and click on the "History" button in the top left corner on osm.org.