I am liking the look of this language. It looks very modern, and neither a retread nor outlandishly experimental or hacky.

What it would need to start feeling viable:

More documentation about implementation details, e.g. runtime environment, memory allocation model. "Ground-up" engineering info.

Some key libraries for a target application domain - web, gaming, etc. The "best option for X" approach.

Ability to deploy Stanza into other environments: Source to source, an easily implemented bytecode format, etc. The "parasitic" approach.