The potential for accounts to vanish if the instance they started on is, to me, the single biggest hurdle that Lemmy will face with casual users. I think that the devs need to really consider figuring out a way to make user logins global.

I said this the other day, but I think it may, unironically, be one of the first times I've ever seen a genuine use for a blockchain, but I have no idea how to implement it.

The reason that the big social media companies came to exist is precisely because people didn't like having to have a dozen accounts for all their different communities. Lemmy fixes that problem through federation, which is great, but introduces a new problem of "your account could just disappear, making all your contributions vanish." I know that was technically a problem before big social media companies appeared and everyone was using forums, but it's a big plus of the current social media giants- you don't have to worry too much about the company failing so completely that the website gets shut down, which is the only way you'd lose your account, any time soon. People are used to that stability, and will not be happy if they join an instance in the fediverse only to have the rug yanked out from under them.

If we want this to be a true alternative to big social media, it needs that stability.