Or, conversely, could the iPhone 11 have 20 cores that are optimised not for latency but for power-efficient execution, such as how much you can do before the d

Or, conversely, could the iPhone 11 have 20 cores that are optimised not for latency but for power-efficient execution, such as how much you can do before the device runs out of battery? These would still be ARM, and backward-compatible with mainstream languages like Swift, so will have a low barrier to entry. Maybe apps will be allowed to run longer in the background, if there are always extra CPU cores available that don't consume much power.