[duskwuff]

> In a Bitcoin world, the main ledger would act as a final settlement layer

Keeping the "main ledger" functional requires miners to have reliable communications with each other; I believe Lightning nodes need an up-to-date view of the ledger as well.

> All transactions would be batched and only get settled so often (once an hour, globally, for example).

There is no mechanism in Bitcoin which would provide this functionality. It's not clear that it'd even be possible without a major rework of the protocol.

[unhashable]

Batching by definition consolidates the throughput to fewer transactions. That's what I mean with that (unprecise) example.