A wishlist would be an awesome feature to have in the store... And alerts for when items in the list go on sale.
Hi there! Thanks for compiling this feedback for us. The best way to get your ideas in front of the Stadia team is to submit this as feedback within the Stadia app. To find this, open the Stadia app on your mobile device, then tap your profile icon in the top-right corner of the screen. From there, navigate to the "Feedback" button below. Make sure to be as descriptive as possible. Thanks again for being a fan!