Through the conversation, I wondered whether the misunderstanding that a #customElement directly correlates to a #frameworkComponent was eased or expanded with the theoretical advent of an HTML Module. Much of what we were seeing as #htmlModules seemed more directly related to what we see in #frameworkComponents, which seems like an interesting path to investigate.
With #domPart and HTML Modules, it it possible to recreate what we know now as a #JSFramework in just HTML!?! 🤯