Earlier quoted context omitted.
What use do you have for romaine, bibb, or leaf lettuce that doesn't involve putting better foods on top of it?
Now that you mention it, none. They're all just better than iceberg. Green cabbage is the lowest vegetable on the hierarchy that I'll actually eat by itself. Though even with that, I sometimes put a red cabbage leaf on top of it.
Also, FWIW, the lettuce wrap version of a jimmy johns sandwich is done with Iceberg. Works really well.