Building ChattyLang to make non-natives improve their conversational skills - feedback wanted

Hey PH!

After moving to the U.S. and struggling with my conversational English to make friends (I sound dull most of the time, monotone I bore people), I started building ChattyLang.

The core idea: AI agent to have mock calls about routine/common life situations with people that want to chat and improve conversational skills, especially non-native speakers and provide feedback (use of slang, pitch, etc...).

Current stage: validation

I'd love your perspective:

- Is this something you'd use?

- What would make it valuable enough to pay for?

- Any obvious pitfalls I'm missing?

My goal is to change the way non-native speakers approach communication and language learning with effortless short calls. Thanks for any insights!