Would the following phrase be considered positive or negative?

revealing nothing about the pathology it pretends to investigate

positive

Would the following phrase be considered positive or negative?

we call the ' wow ' factor

positive

Would the following phrase be considered positive or negative?

'' serious issues ''

negative

Would the following phrase be considered positive or negative?

filmed the opera exactly as the libretto directs , ideally capturing the opera 's drama and lyricism
positive