This is a worthwhile topic to discuss. And for the current environment I think you've outlined good steps to take.

In the future, I would expect a smart contract to take care of estate planning in all capacities. Something along the lines of the asset owner creating a contract with a specific set of requirements and a recipient(s) to receive assets after proof of death can be confirmed on the blockchain.

To simplify this example, asset owner A wants to will assets to owners B and C. B and C must prove A has died via the blockchain; then and only then are those assets than transported to B and C's respective wallets.

A lot of research needs to be done in this example such as how do you know that a death certificate hasn't been spoofed. But ideally it would be as simple as that.