Just like the phone app except on your desktop, launch it via your computer. You can scroll through the games, read the community forums for each games like steam, see the reviews/youtube videos related to that game in it's own little sub section. I feel this would be cool.
I would want this I saw a similar topic on reddit it wasn't to well received but I don't think that is the best place to post anyways, stadia community is a bit more informative and has varies solid feedback. I never used chrome before and only planned to use firefox but downloaded chrome just to use STADIA, if i had a google made stadia only option i'd use it on my computer.