Yo,
So apparently there's like 4-6 million bitcoin that are lost and gone? Just curious if there was any ideas or plans to update the protocol to replace the lost bitcoins if there was a consensus, if that is even possible.
We already have a consensus for that, lost coins are lost forever.
No plans to update it from the core developers and I hope they keep it that way. Those who have lost their bitcoins will most likely want to get it back and sell it right on the market causing massive dumps.
Less coins in circulation means more demand and more price of a satoshi per fiat currency.