changes which arguably will make it not be the "original bitcoin" anymore (!)
I don't think that's true. We have made plenty of changes to the original bitcoin code, and yet what we have is still the only true bitcoin. Satoshi even touched on the possibility of adding more decimals or even moving the decimal point to make the numbers easier to deal with:
Eventually at most only 21 million coins for 6.8 billion people in the world if it really gets huge.
But don't worry, there are another 6 decimal places that aren't shown, for a total of 8 decimal places internally. It shows 1.00 but internally it's 1.00000000. If there's massive deflation in the future, the software could show more decimal places.
If it gets tiresome working with small numbers, we could change where the display shows the decimal point. Same amount of money, just different convention for where the ","'s and "."'s go. e.g. moving the decimal place 3 places would mean if you had 1.00000 before, now it shows it as 1,000.00.
And as Satoshi says, relevant to OP's question, regardless of how many decimal places you use, or even where you put the decimal point, it is always the "same amount of money".