With this project we are trying to be as respectful of the user as possible, so yes it is correct we won't keep re-prompting once installed or dismissed. There is still a lot we are working on fine-tuning the heuristics of this but I am quite hopeful that we will see a reduction of custom banners on the web because we can provide a better experience for sites.
* It will only appear for sites you use regularly * It will only appear once per site, ever