I'd like to see bitcoin taking over FIAT currencies but I don't think Bitcoin or any other currency can handle that kind of demand. The tech is not there yet.
The option proposed by Charlie Munger seems to me the most possible, because fiat does not allow the governments of various countries to control the money of their citizens. I think fiat will replace the digital fiat on blockchain, which will be issued by central banks under the leadership of governments. At the moment, I believe that never and under no circumstances will bitcoin replace fiat \ digital fiat. The most that governments will allow is to invest in bitcoin while taking taxes on profits.
Therefore, I see the answer to the question of this topic in the 3rd answer option: "The leader of the crypto market, a niche currency and an alternative investment asset (like now)".