Why would we remove it if the whole point of it being there is to be a power tool for the Kings?
Decide Fate has many uses. For example:
It stops vote for classes. People are less likely to vote people up each day to get a claim because if the Prince pops up, say byebye, because Evil King will punch the decide fate without a hesitation.
It lets the Kings save their power players in dire situations, like you pointed out. Works in Good King’s favour too if they’re trying to save a Prince from an outnumbered situation.
If we were to remove Decide Fate, 90% of the community will explode and the game becomes super unbalanced.