Hi Marie,
Thanks for your kind words.
We are already working on Blogs and Special pages SEO support. It will be released in 2 weeks from now.
For bulk editing, we have a feature called “Auto Pilot”, if you are using Pro version, you can enable this function. With the exception of Image renaming we have facility to auto pilot all the things you mentioned include meta title and descriptions.
Let me know if you are still having issues finding Auto Pilot.
PS: Can you do us a favor and review our app on Shopify store. Your kind review will help us reachout to more customers and show our impact. Link to review our app – https://apps.shopify.com/seo-doctor?#modal-show=ReviewListingModal