General knowledge was that people wanted to open as close to the Tony cutoff as possible because it would give them the best chances at the Tony, but Adam Feldman mentions that in the past 20 years over half of the Best Musical winners did not open in the spring, so I wonder if it's just a paradigm shift that needs to happen? To be fair, if your show closes before January, I do think your chances at winning Tonys becomes a lot slimmer, so it's about playing the game to remain open until the Tonys, which would be harder it you open earlier, but then it also becomes about creating a show people want to see, marketing it to those people, and keeping finances under control so that you can still run through some leaner months (all of which, in my view as an outsider, you should be doing anyway).
I don't really think there should be an authority to oversee this, because I don't see it as an inherently bad thing, but it does seem to be good food for thought for producers.