1. This is actually a feature on Pixel through the assistant [0], surprised it's not on Chrome itself
2. That doesn't really seem like a Chrome feature? Belongs more on Bard.
3. That seems like a Google Assistant feature too, some of that actually may work on a pixel phone, though might be nice to have on desktop too.
4. Will never happen. Google themselves have a captcha product so defeats the point.
[0] https://support.google.com/assistant/answer/14163109?hl=en