Thank you so much for sharing you concerns.
First of all, I want to clarify that the Classic Editor is not going anywhere. We actually have a lot of features in the pipeline that will continue to impress and make the Classic Editor great.
We developed Editor X to fit the needs of our professional users, we are aware of the missing features and are working on bringing them to production with responsive capabilities. The Editor X beta was intended to allow our users to try to use the product and bring some sites to production and get feedback abou the experience.
All the feedback we get allows us to better prioritize and understand what functionalities are most needed. We want you guys to have the opportunity to have a voice and share your ideas with us so we can try to bring them to life.
I hope this answers your questions. If there is any feedback or feature requests that you want to add, please feel free to share.