It's not yet a complete proposal.
Here's what I have in my mind.
The only chance for Nu to receive an immense number of BTC soon would be a severe nosedive of BTC. Even if the trading gets revived, a big increase of demand for NBT is not in sight without a BTC nosedive.
But with that nosedive came the issue that the BTC that are received lose value.
In the following I'm speaking about the NuOwned gateways.
I imagine trading an overflow of BTC (leaning on this scheme) for USD, USDT or other USD stable currencies.
But if BTC makes a severe nosedive - I'm not saying it will do that, I'm just planning for if it does - there will be lots of "USD" on an exchange.
This poses a default risk. We've learned that lesson already.
During not so volatile times the "USD" would be traded to BTC, sent to you, @Dhume, converted to USD and put in NuSafe.
As that creates extra efforts on your side for each deposit to NuSafe, you should receive a compensation for that on top of the operating fee.
We can just make it a flat fee until NuSafe is at $30,000 again and continue your compensation, because with less funds in it, you have less risk to bear.
Either from @30,000 on or before that, you should make an offer for a compensation per deposit (fixed price preferred).
Does that make sense?