I think you're still a little confused. The bitusd will be held in a multisig reserve as a tier 4 fund, it will not be spent unless the nubit peg is in serious imminent danger and we've spent all our btc (you know, depending on how we actually end up specifying the terms of the bitusd reserve. It'll be a zoology reserve, again for anyone keeping track).
The providers will be paid in nbt. For every nbt we give providers, this proposal would imply that the bitasset community owes Nushareholders 0.5 bitusd per nbt used. These can be created using bts y'all print or whatever, it's not really my concern where you get your money from. I'd suggest you print some fresh bts and lock it to make bitusd then give us the bitusd to Nu under the assumption that they probably won't even spend it. Then you basically get free liquidity. But again, not my concern.
I'd suggest we start with something like $1/day until we get a real handle on the price feed. Of course, there's going to be plenty of beaurocratic hurdles to overcome to get a proper contract written and passed on the Nu block chain, then there's the matter of the ALP bot upgrade not being ready yet. So this whole concept may take time (months) to come to fruition, but I truly believe it would be a lucrative endeavor.