I think this is a bad option for who run such wallet....
You can risk too much... it's easy loss such data or I am wrong something?!
Perhaps I use only multibit classic wallet (probably because it was my first wallet
)
Nonsense, how hard it is to write down the seed to a fucking piece of paper?
If you cant remember it, then write it down. If you do neither, then dont be surprized if you lose all your money.
What I do is, GPG (TWOFISH) encrypt my seed with a strong password and give it to literally everyone.
Once I need it, I ask them for it and decrypt it.
As there's no public/private key hassle, you can decrypt the password anywhere you want and can retrieve the coins.
(Smart isn't it?)