The dead man switch is what Taproot enables. 

You cand buld wallets which is controlled by multiple keys by them self or in combination. 

For example you can build a wallet where your key always have access to the funds. 
A second key which only have access to the funds in combination with a third key. 
The third key have only access to the funds together with the second key, but after a block height this third key have full access alone. 

The dead man switch can be constructed with MAST 
today there is no best practice with MAST and most likley usage will only result in losses.

bitcoin

Is there something in Bitcoin you want to improve? 

Bitcoiner1

Any non forking privacy improvements on the base layer are always welcome but I think we can start focusing on the next layer up and continue to improve LN.

There are constant proposals you may be interested in: https://github.com/bitcoin/bips. They list the status of everything from proposal to finalized. I don't know the meaning of most of these things.

I would like some sort of dead man switch to automatically dump my Bitcoin into another wallet address if I am no longer alive to maintain it.