...But to have some fun, I think we should set par at 180. Pros will smash it. We can invent new terms, a goonie is three under par, a blue footed boobie is four under par, a five under is a dodo, fans will go wild! I mean since the only credibility that matters is what we think
180 is too high to make it easy to compare performances across rounds and courses. You'd need another parameter for how many under par is good on each hole or course.
Let's go other way and set par to zero. We can come up with a different name for over par, like "the score". No wait, that's too low. You'd need another parameter to know how many over zero is good on each hole.
Let's go back up to the number of throws to get to the target plus 2. Or, maybe better, set par so every hole is guaranteed to be birdieable. No wait, that's too high. Then you'd need another parameter for how many birdies you really need to keep up with the field.
OK, back down the other way to set par to be the lowest score humanly possible, or maybe the score players hope - but not really expect - to get. No wait, that's too low. You'd need another parameter for how many bogeys you can suffer and still keep up with the field.
Oh, if only there was something right in the sweet spot: the score an expert player would expect to get with errorless play. Then, the players could simply look at whether they were above or below that to know whether they were keeping up with the field. If only that were encoded into the rules. If only more and more people, especially the Directors for those two new big tours were actually using this mythical par. If only there were methods developed and calibrated to make it easy for anyone to find what this par would be for any course, whether it has held a tournament or not, and published
here.
That would be cool.