The speed of the user interface is something that could be improved. People think that Plesk is slow because the user interface has a lot of elements and sometimes takes time to load. The operation takes place in the background but the UI fails to communicate that to the user. If the UI could be upgraded to increase the speed or something, that might change user perception. For anyone coming from a Linux background, it creates the impression that the control panel is slow. An added feature I'd like to see is functionality in the email sphere because sometimes we need emails for solely transactional purposes and it would be helpful to have that integrated into the solution.