Just to be a devil's advocate (my speciality) including tongue in cheek but:
What;s broke to fix regarding the runway?
Sure we could all say if there was more margin, like a longer runway, less water etc. But in the end there will still be another similar accident with a different runway.
All we do in this business is to fix broken things, or add improvements to increase capability, including longer runways for heavier planes. If the runway is legal, there is nothing to fix. If you want to add margin to the runway, it will just get used by bigger planes in the end, like the rest of the world would do.
Or do we want the regulations changed affecting the whole world?
Before we start calling for changes against some specific ingredient of this accident we better also have some idea against what standards