At long last, my Next Generation Scenes PR is out for review! This will be a huge step forward for the flexibility and usability of #Bevy scenes. Stoked to finally get this in the hands of the people!

https://github.com/bevyengine/bevy/pull/23413

@cart
Weeeeeeeeeeee!   This is awesome! Congrats, Carter!
@cart, the only thing that bugs me a bit is `GetTemplate` trait that has only an associated type inside and no getters. It feels like `HasTemplate` would be a more suitable name.