It looks minor indeed, but there are many things f/o's aren't allowed to do at some carriers, something that they did use do with their old companies. All these 'don't even think about it' items soon add up and what are you left with?And what about when going for command? Then your suddenly expected to do it all?
FYI, I used to love taxiing. Now all I'm allowed to do is tell the other guy where to go.