I’m sure it’s not an easy task, but having the ability to be able to copy components/forms/details/etc. from a page and then paste them in any page you wish would save many hours.
YES I will second that… often we have to create 2 screens which willl look and feel very identical but with some subtle differences - especially where the two screens will have different rules. Example, an ADD screen, and an EDIT screen. The fields will all look identical but the back processing will be different.
Problem with the builder is it cannot copy the components to a cascading part of the page (it can only copy to the parent level).