Rebalancing the pool (from Concepts)

A trader that is bringing the scarce asset scarce asset gets a better price than oracle (bonus) and the Trader TAKING the scarce asset gets a worse price (slippage). This ensures there is always an arbitrage incentive to return the pool to balanced

since the NZDS is scarce in pool = overprice and the USDC is abundant = underpriced

a trader is incentivized to rebalance the pool...

(1) there is an arbitrage profit to collect by adding (selling) his NZDS for USDC (buying).

(2) as an LP he will benefit from a balanced pool due to increased swap volume and fees.