"The nature of the universe", what do you mean by that?
If you mean that we as earthlings assume that our part of the universe does not exist infinitely, then we have made a prediction about its finiteness. How would that help you personally, for example? How would that differ from your knowledge that your own life is finite, regardless of the nature of the universe?

That depends on what you consider relevant. Maybe you can help me here and think of one.

I have no idea about that, hence my question. There's actually nothing I can think of.