Even the first thing in your list is already questionable. But perhaps if you change the "few days" into few months, it's better. Otherwise, you might be surprised your wealth is gone after a week-long retreat, vacation, adventure, pilgrimage, or whatever.
I can't wrap my head around the setup in which your funds are protected by private keys which you alone know and control and yet your trusted contacts may actually access those funds. Doesn't this setup imply another party that's actually in control of your funds? Or is this like a time-lock feature which the owner himself/herself initiated?
For me, it's probably enough that you write down your backup. In case of emergency, your family might have to turn the house upside down to look for it. If they fail, then perhaps your coins are meant to perish with you.
If there are automatic mechanism of assigning access to my bitcoin, Bitcoin private keys, wallets without me and my signature from my Bitcoin private key, I see it is extremely dangerous and I don't support any idea to develop it technically.
It should be ignored at the start rather than trying to develop it, test it with testnet and make the Bitcoin community separating. It will trigger another scam wave with many shitcoins created in names of Bitcoin forks while true Bitcoin users who understand about Bitcoin blockchain properly don't need this development and definitely don't need to have more scam Bitcoin forks.