I’ve always tried to take all responses from testers under consideration, but - honestly - I look for very specific types of feedback. I’ve just always felt bad posting an exact list because it might make me seem like an overly controlling taskmaster. 
I do think it’s important for a game creator to know what they’re looking for from beta testing, as well as pointing out what they are and aren’t willing to change so that beta testers can focus their attention elsewhere if need be.
That’s just from a feedback requester’s viewpoint though. I don’t delve much into the world of testing myself. 