"Impactful" might be counting your chickens a little too early. Let's see if it has any impact. The next POTUS might just ignore it, or some other shenanigans might be used to work around whatever the imagined impact was.
Just look at the decision lists on Oyez or Scotusblog? Big decisions are more likely to be split than small ones but SCOTUS hears many many cases that get almost no media attention, most of which are decided unanimously.
