The current names of objects, columns, and column groups usually use some combination of camel case, abbreviations, and no spaces, which makes them difficult to read. Nobody writes like this outside of programming, and most users of PI Builder are administrators, not developers.
It's not like spaces are never used; they are just not used enough. For example, the UOMClass object has a column group called "UOM Mapping". The ElementTemplate object has a column group called "Attribute Columns".
Please make the names more user-friendly.