I don't really see how that's superior to anything. It adds complexity to a system that's already hard to understand to large slices of the voters, and provides nearly no actual advantage to either the old paper ballot or the new electronic system.

A potentially better approach would be to have the systems themselves publicly auditable and somehow have the live ballot devices verifiable.

VVPATs do not add complexity, they cheaply allow a layman to verify if a proper record of his/her vote was produced.

I can't parse your last sentence, sorry.

PS: Yes, I would prefer to redesign the whole thing from scratch and tightly integrate physical and electronic records, as in an optical scanner, but this is very unlikely to happen anytime soon.