I see what you mean. I believe you should be able to use the `Event` return type for both. webflow accepts and can parse both, I believe.

When I was evaluating the LPPE bits, I had also used codes for webflow transitions. Agreed that it's not the best approach perhaps, but maybe so long as the transitions are abstracted into a common component, that would reduce clutter. I imagine that could also present us with some nice extensible points whereby custom extensions of AuthenticationViaFormAction and that of its parents would even be able to redirect the flow in overriding those message codes/states for edge cases.