Yeah, I mentioned this earlier.
In not a single game I have ran, in the last 10 years, has Divine Intervention gone off.
In ONLY a single game I have played in, over the last 10 years, did Divine Intervention go off, and it was to use Raise Dead on someone outside of the time limit (they had been dead for 15 days if memory serves) and it had heavily negative connotations for my actions affecting the fate of the world.
In only a single game I have WATCHED did Divine Intervention get used successfully, and it was a big punch onto a nasty BBEG (literally a divine fist). Which did about the damage of a 5th or 6th level spell if memory serves.
I agree that it is less powerful than "do whatever you want" but that percent chance meant that it usually did NOTHING, and the current version is better than nothing.