I see that it’s currently not possible to create custom reports based on product dimensions and metrics (name, category, avg price, etc) and they also don’t exist in the Looker Studio connector for now. Is it possible to get them using the reporting API? Are there any plans to add this reporting option in the future?
Hi. Good timing for that question. We’re doing the last testing and mentioned feature will be available live in May. 
Great news, thank you!