So, if you imagine far into the future this concept would be great. The issue comes from the current world we live in. I don't see any way something like this could be done without a rehaul of society. First, lawyers are necessary because inheritance is more complicated than a simple transfer of ownership. Also, how would it transfer ownership without the person who is receiving the inheritance ever having access to the private key of the person they are receiving it from? How would the blockchain verify people? If every person in the world had a secret key they used for the blockchain (similar to a SSN in the US, but more secure), and every public key was connected as a graph to other public keys that they could receive inheritance from, then it may be possible. However, this won't be possible for many years.
You asked so many questions. I think once people start generating answers to them, they can find an interesting&smart solution among all variants. From this point work on the project will begin. Maybe even now some team is creating smth like this.
And one more thing - I just shared an idea, but you wrote like I'm already doing this project or going to realise it. This is not true.
Perhaps you also have some ideas that you can share here with us
I apologize for sounding like I was trying to attack your idea. It's a good idea. I just wanted to dig deeper into the concept so it can start generating some extra thought. A lot of times people just look at the surface of an idea when the things that interest me the most are the complex details. Exploring the details is a lot of fun.
Since you asked, my opinion is that one of the next big ideas in blockchain will be figuring out decentralized communication. A purely blockchain text, audio, and video communication service. Due to the amount of data and latency restrictions it would require a redesign of the blockchain, but I think it's possible.