How about putting some of the little remaining BTC as USD on bitfinex and offer it up for margin loans? It would provide a constant income for Nu to help fuel the buy side.
I know we want to get away from the reserve model. But now we need the reserve - and we need ways of increasing the reserve.
the interest is very low, 2% APR or something like that i seem to remember.
2x leveraged long position might be more interesting – when btc goes up n%, nu needs n% more in btc, and a 2x leverage will give you just that.
Current USD margin is %0.049 per day.
15% APR after fees.
Leverage is interesting - but more risk.