Does not matter now as Hunter has been given a blanket pardon.
He has a pardon for US laws. If getting a prosecutor changed to stop investigating Burisma was worth a billion dollars of aid, just imagine what the tens of billions in weapons could buy now. Do they hang foreigners for corruption in Ukraine?
Could matter, if there are other "parties" and especially outside of US jurisdiction, such as in the UK and other European nations.
Could matter for James Biden, or others peripherally involved. And then there are other Americans who had a hand in the Burisma-related issues and beyond. This has not as yet been fully untangled.
As more emerges, it is sure it will be entertaining.