One problem with that is that any individual study should be read in the context of other published literature, if you want to form an informed opinion. The only alternative is authority - either looking at the journal where it was published, the authority of the authors, or the authority of someone who recommended the paper.

Otherwise, it's easy to find plausible-sounding papers that have failed to reproduce in subsequent studies, that use too low samples compared to similar studies with different conclusions, that were later retracted etc.