As long as the bitrate is allowed to "run free" to exploit that ceiling, I would not expect it to be particularly responsible for suboptimal output. Leaving a dnr process to run on autopilot, otoh, would seem to be just begging for issues to crop up. Similarly, restricting QC to mere "spot checks" over the entire length of the movie is just begging for issues to sneak through in whatever areas are not checked. These are all aspects that come from defining the scope of the project, rather than any technical specs of the target medium.
Margot Robbie is THE most exquisite human creature on the face of the planet, in this moment in time.