Hopefully BCH can also make use of the lightning network when it comes online. What LN does is take most transactions off chain so that it's used like a court system. The question is which court system is better: the 1MB block court or the 8 MB block court?

LN uses game theory to settle transactions off chain with similar ideas to mining bitcoin that makes it very costly to cheat. Therefore submitting blocks to "blockchain court" for settlement would be done only when necessary.

All I can say for now is that if LN comes online, this issue about block sizes may be moot and it will also make it much more difficult for chain analysis tools to work, enhancing privacy.