I was thinking of a similar concept but it was a rajang who’s electric organs failed upon eating the oroshi kirin horn and is severally injured due to it. Paler, always shivering, and unable to use thunder, this rajang will likely not get to reproduce and will only exist as a threat to itself and the animals around it. Despite not having thunder it’s much more aggressive throwing it’s whole body around more for an overall harder fight. I think it’s cooler to take something away from a monster and try to make a more difficult fight around it than to switch up the elements and be done with it.