At some point, the expected future returns in the Lightning Network will influence the term structure of BTC futures.
Why?
Let's say you're a hedge fund and you have cash in dollars. You can put it in a T-bill for a few months. Or you can buy Bitcoin, put it in the Lightning Network, and get a return on it. With an appropriate futures position, the price risk from BTCUSD can be neutralized in this trade. What remains is the volatility of the Lightning return.