On behalf of a user from Austria let me post the following wish:
At modifying the shape of floors in-place voids can be used. These voids cannot be found easily posterior in the projects, as they are displayed just by the cutting surface (instead of the whole form) for selection. The whole shape of the void first appears when edit element is selected .The wish would be to make easier to notice those voids in the project (eg displaying them by whole form) for selection.