That's a good point. It'd need both widespread adoption of the player, and some kind of good authoring environment.

Interestingly enough, the Ruffle player itself is looking like it'll achieve that wide spread adoption. If a "Flash Done Right" type of thing was included in that by default, then it'd just leave the authoring tools piece missing.

Others have pointed out that Godot has timeline functionality similar to the old Flash (authoring) interface. So maybe the authoring tools piece would mean existing authoring tools (like Godot) would be able to add a "Flash Done Right" output target and call it a day.

Seems like an approach that would work.