Consistency between modules / applications
It seems very apparent that different parts of the application are developed by different groups with different 'design' teams...
For example - create a maintenance request in workplace, you can select the location from a drawing; Create a move in workplace, you can only select from a list of rooms - drawing should be an option for all room selections in workplace
Another example - In hotelling, to set rooms as hotellable, you have to drill down to a room via a tree view; SEtting rooms as reservable in Room Reservations, you have a filter console to search - so you can get all rooms in a building or site, vs. floor-by-floor for hotelling.

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Amanda Ferragine commented
I agree, and I would add that there should be consideration to consolidate similar activities, such as configuring notifications across the entire application. There is a different process for Hoteling, Project Management and Building Operations / Service Desk notifications.