Let's talk about live captions: what would make this perfect for you?

I am launching CaptionSpark because browser audio often has useful context before it is convenient to listen closely.

I would love to learn how people here would actually use live captions in a browser:

1. Which tabs or audio sources would you caption most often: videos, calls, livestreams, X Spaces, courses, something else?

2. What would make an always-on caption overlay feel calm instead of distracting?

3. If you use Spanish translation, what matters more: speed, accuracy, or preserving context?

I am keeping the first version narrow on purpose, so concrete use cases and missing features would help a lot.