Sorry to be churlish but the genius of beans on toast is its simplicity.
Too much fannying about with it and you lose the whole point - a simple feast prepared in just a couple of minutes.
It's like Marmite on toast ....
did anyone ever start a thread on the world's greatest breakfast snack.
Toast bread,thick layer of butter and then a dollop of Marmite while everything is still warm.
IMO Marmite is nearly as good as sex.