Fixed amount vs. infinite coins
Fixed mount is dumb, because there will sooner or latter run out of coins. Infinite supply is solution. What matres is schedule that is set in stone before first block is mined and stay that way forever. So at any point we exactly know how many coins will be in existence at any time.
That is nonsense you will never run out of coins you can infinity do splits on the current supply like with bitcoin if in 50,000 years there was only 20 bitcoins left do to lost keys and burns coins.
you simply would just need to turn the Satoshi 0.00000001 into a 1 and then allow Satohis to be split into 100 million parts so 0.0000000100000000
But when you receive a Satoshi the client says 1 Satoshi and you could do things like 0.05 Satoshis