Cool. Thanks. Yes, I’ve been thinking that perhaps the situation is that indeed there is not currently a straightforward way to do html changes in a plugin like you would do in a theme–to make html changes you have to go into the templates/connectors in a plugin (not too complicated, but different than the simpler theme mindset of common/header.html).
I’ll take a look at plugin.rb and see if that is currently easier than just going the normal template/component route.