Surely, then, a critic's other job is to look for the good in everything, and identify who a film would be enjoyed by?
A critic's real job is to accurately review cultural artefacts. But past a certain point, this doesn't just mean saying whether they're good or not, but having an insightful dissection of the material. Quality judgements - 'buyer beware' type things, essentially - only seem to be needed in mass media, where works of art might actually utterly fail to say what an artist or team of artists intended. For a review to work effectively, both the reader and writer must have already had the experience.
So picture this: Empire magazine having two review sections: one assessing this month's releases, in terms of how affecting they are and whether you (depending on who you are) should go and see them; and the other literally reviewing last months releases, for a full on, spoiler packed, critical debate for the informed reader who wants extra mileage out of the film they've invested the time in. Then imagine that replicated in whatever strand of culture you're into. What do you think?