No penalty was an appropriate response to the original condition. Regardless of leaders creating ideal conditions for themselves - which they are employed to do - they must at some point slow down to ensure they do not pass the Safety Car. Going slow up to the SC line would exacerbate the issues we saw with restarting. In particular, Hamilton came a whisker from getting a penalty for passing the line at the first restart. Ferrari should have communicated to their driver that Hamilton may slow down!