I think it's quite simple to explain the system. It's different, to be sure, but if you explain to people that you vote your first three choices and.... Everyone knows how leaders were elected. That's the process that is used, so that's how your individual member is elected.
People will understand that their vote will be taken forward into Parliament and trust in their elected representative, if they voted for the candidate who was elected, or someone else from that party if their candidate was defeated. I think they'll understand that pretty quickly. They'll understand that they're getting better with that system than they are under this system.
Did you ask about the question of validation for a system of this nature?