Hi there, @Anri 
Thanks a lot for the feedback!
We already have a request for the Rating widget and you can upvote it here - Rating Widget.
Regarding the Goodreads source implementation, the deprecation of the public API didn’t affect our review provider, since they are using a scraping method. Worry not, everything will be working fine 
It’s hard to share the ETA for now, but we promise to keep you updated on any further developments!