First corners after the start where accidents that take out competitors through no fault of their own can needlessly ruin a race result or more critically championship chances.
It is true that driver error is one of the main causes, but because it happens continually, that probably wont change.
So, what external things can be done?
Some solutions may be redesigning those first corners, Shanghai seems to be a reasonable concept.
Or more distance between rows, making qualifying more important;
Rolling starts, seems fantastic at Indy etc
Maybe the vote should be with those who pay for the repairs