As an everyday user of DB Vizualiuzer Pro, I see a big benefit of having more space for data views and reduced space for all kind of panels
For example, the SQL commander panel with connection and database selection is always shown to the user and takes at least two lines of actual query code.
The space between SQL commander and the result set is also taking a big portion of the screen.
It is distracting from focusing on the actual query and its results as well as forces users to do a little more scrolling.
Maybe as an improvement, these panels can be hidden by clicking little drop-down/hide arrow, such as Office products have for their ribbon menu
Please refer to the attached screenshot for more details
Check the View menu as it contains some toggles to hide a few of the components in your screenshot.