Nate says:

"I don't understand why it matters how blocks get filled. Use lightning for basic spending if you want to use bitcoin as money. If you can't afford to, use ecash until you can. As for ease of running a node, a 4tb drive gets cheaper everyday. should be good for a decade or two."

Everything after the first sentence seems spot on. Also, I like the idea of reducing the cost of using lightning so that poor people can acquire self custody faster. Creating multiple channels in a single utxo seems like a promising way to do that.