I did use the feedback thing, but I have no idea if that is the best way. I'll be honest, I don't think they will ever read it, but I wanna try all my options.
If this helps, my feedback is about a missing feature: photos.google.com already uses tags, I can change/add tags in picasa and upload them, then when I search it finds pics based on tags. However the process is very backwards, un-intuitive and broken. If only they would add a small, bare bones feature where all you can do is add/delete tags without having to go trough the sync/block uplad & re-upload head-ache mess.
Best Answer
Below link shows how to send feedback for Google's product:
Help improve Google’s products .
If you want to send the feedback to the Google photos team click on below link:
Welcome to the Photos Help Center.
Or you can join Google Photos Help Community to start a discussion. You will get expert comments here.