A Quirk-remover would be more interesting in terms of how the characters react to the notion of having their Quirks taken away and how the public at large deals with such a threat. Do some people agree with the notion of removing Quirks? People who weren't so lucky as to get a good Quirk might want theirs removed or there might be people who are behind the idea of villains having their Quirks taken away as punishment?

I agree it wouldn't be the most interesting fight, especially if we know there's no actual risk of our characters having their Quirk's removed (though isn't that true of most RP fights? There's exactly as much risk as we want there to be), but it could be an interesting plot point.