You bring up some interesting points here, and I have had some of these concerns myself. It is why I will continue to build certain sites on other platforms. The biggest fear I have is what if the company is sold, and then everything gets sucked into some large megalith corp who has no interest in maintaining any regard for the current users of the platform. Regardless of whether they are novice or pro users. I have listened to the last two video interview with Vlad, and like his vision for the company and see why they might be making some of the decisions they are making to try to reach a broader market.
That being said, I can imagine all hands are on deck for their ecommerce product as it was a big missing piece in their puzzle. I would love to see user login areas, as well as basic logic functionality, etc, but again… time, resources, etc… They can only do so much… In my experience, companies like this tend to focus in on the things that are driving the most revenue. Right now that means working to remain competitive with web builders that the average Joe can use. I have to imagine some of the things you are referencing will remain low on the priority list until some large company comes in and demands the features for compliance, and is willing to pay for their development directly.