Hi there! May I ask, is there any "correct" ending? I have achieved a bunch of them but still have a subtle sensation that something is missing.
And btw, does the content of the container impact anything?
No! To me the true ending begins when you complete the heist by any means and take the box back to Levi. After that it's up to you what your canonical ending is! There are some truly unique endings that are harder to obtain!
And no, outside of one very obscure epilogue scene, the contents of the box is intentionally random!