In your OP you state you want them to know how much they are receiving in bitcoin, so just display the amount in bitcoin.
"We have sent you 5 cents worth of bitcoin: BTC0.00014435"
Presumably they will be newbies, so KISS.
You are quite right, I need to keep it simple and stupid.
But using whole BTC isn't an option because the payouts would appear too tiny.
"
oh point oh oh oh" isn't something that people want to have.
So I had to find a bitcoin unit which is universally understood and small enough to avoid the decimal point, and I ended up using satoshi.
But we do need a good name for 100 Satoshi.
There is only one reason the "bits" term is equivalent to 1µBTC: we need convenient a name for that much Bitcoin.
I disagree. Or at least: I'm not included in
we.
My faucet is running since two weeks and payouts are quoted in satoshis.
I have received zero complaints, questions, or issues regarding the use of "satoshi".
I have a short explainer on my site which essentially says "
100 million satoshis = 1 bitcoin". And that seems to do the trick.
Thus I have zero incentive to add any additional units to the system. I don't want to needlessly clutter up my website.
Actually, I'm rather worried that additional units could confuse newbies, for example, like
this.