NuBits are PERFECT for arbitrage, because they can be moved quickly from one exchange to another. If people want to use it for that, then the volume of NBT traded will keep increasing, but if people can move “USD” value fast and without the need of using a banking system, then the reason for different prices at exchanges will vanish. The reason for price difference is based on how hard it is to inject “USD” value into an exchange, the harder it is, the cheaper the coins are. The easier it is to deposit fiat currencies (“USD” value) the higher the prices are.
Therefore we have two sorts of exchanges, hard-to-access with lower price, and easy-to-access with higher price. The hard-to access exchanges are in favour of arbitrage, because it earns them fees. If arbitrage vanishes, they’ll earn less, this is why there needs to be a compensating reason of having NuBits on an exchange. Would their general volume increase that much to compensate for the vanishing arbitrage?
On the other hand the easy-to-access exchanges would face an inflow of cheaper crypto-currencies, so their fees would also decrease proportionally ( I know that those are microscopic numbers, but still).
A third group to consider are the people living out of arbitrage. They’d hate NuBits, as over time arbitrage would vanish, so they’d be losing a source of income.
The fourth group are ordinary users who would love NuBits for cheaper coins and easy access to "USD’ value. I think this is the most important group from the Nu community poin of view