In my opinion, neither perfect critique exists, nor perfect reviewer.
A good critique presupposes a fair reviewer with sufficient time to review. He/She must have a positive attitude to provide meticulous review to the author/s, suggesting in a higher degree acceptance of scientific papers than rejection.
Critique with the aim for improvement (constructive instead of destructive / aim for new theory of knowledge contribution instead of denouncing others to maintain existing theory or status quo).
Critique with improvement action plans (tell also the solution / action plans & not merely telling the problem).
Critique with openness & fairness i.e. don't criticize just because the author / presenter didn't cite the reviewer's works or the reviewer wants to show that s/he is the authority in a particular research area.
What is "perfect". I dont know. But I can say that a perfect critique means evaluating / interpreting/ analysing/ explaining any thing with any prejudice in mind. A perfect critique should keep in the mind the benefit to humanity and uplifting the human culture.
There is nothing perfect in this world except PERFECT and ROUND because these two words do not have superlatives like more perfect or more round. The three degrees of comparison are PERFET and ROUND.
In the same way no man is perfect.(man in generic use). According to Chinese psychology there is nothing like perfect.
Criticicism is like running water which has an individual flow of one's own style.
I would like add to your answer with slight change " the Critic Must be broad Minded and should have non Pre judgemental attitude and be impartial. do you agree with ?
Perfection is always defined relative to a set of values. I'm sure you do not expect a critique to be able to cook vegetables, hence perfection must be qualified. No?
In my opinion, neither perfect critique exists, nor perfect reviewer.
A good critique presupposes a fair reviewer with sufficient time to review. He/She must have a positive attitude to provide meticulous review to the author/s, suggesting in a higher degree acceptance of scientific papers than rejection.
With the interpretations I opine that the critic's criticism should bring some innovative and creative thoughts from the existing with his or her comments and it should like a torch to the writers and readers.
Quality of Perfect Critics depend om the motivation and purpose who gives the critics. Do they give critics for building and development something or only destroy their idea? We hope the argument of critics are logic and can be responsibility.