and you're better off increasing the block size to increase both the capacity of the network as well as to help the miners increase their income.
We are still far from the point (although it's years, not decades), but.. let's see what the hardware brings too in that time, OK?
Being on ~4vMB blocks for the near future is absolutely not okay and it should not be an option at all. You do need on-chain transactions for second-layer solution. It is impossible to support them without having on-chain transactions, for opening/closing channels for example.
Indeed, second layer channels do need on-chain operations. I knew that. But we don't know yet how big will be the need to open and close channels. Well thought channels will not need closing because they'll keep carrying transactions in both directions. Am I missing something there?