The first generational mortality transfer will likely lose SO MANY of the 21M coins - I wonder if adoption is great enough by that time before anyone cares about an mSat.
I think many people will have their coins on Lightning and custodial higher layers and will survive the purge - I’m not convinced we’ll need a fork to elevate the mSat but we’ll need to figure out the dust limit for sure.
Get your kids to study math so they can solve the technical problems of the future!