Yep, it's been brought up on the Discord before, and is actually on a special list of "bigger features" I have that I'd like to do--stuff that's not essential though would be nice, but also would possibly take a disproportionate amount of time to implement compared to how often they'd be used. And there are a lot of things on that list, too xD
In any case, it happens to be one of the "easier" things on that list, so maybe. One of the smaller barriers to adding this feature--having a decent place in the menu system--will be removed in Beta 6 since we're getting the new Records page (which'd be the perfect spot) as part of the menu rework. And of course the game already records your previous wins...
I'm all for letting people watch the endings again, considering how long it took to make them
. I'll move it off that list onto the main list, where it's a little more likely to happen!