Custom title tags for custom pages
I just created a bunch of custom pages for photo galleries of products. The I discovered you can't even create a custom title for a custom page, which just boggles my mind. The title tag of any web page is the single most important tag element. I've just created a couple dozen pages that default to the main store title, which is next to useless. Also, you really need to upgrade your title tag functionality in general, so that products assume the name of the product as the page title, without having to set them one at a time. Also, creating a default title setup, so that you can choose to include the store name in all titles if needed, is very basic SEO functionality these days.