One thing I've always found is that file names should always be meaningful. By this, I don't mean full text string names describing what the drawing is of, but instead each drawing name should be unique and of a consistent standard. For example, our company begins each drawing with a 7-digit alpha-numeric code representing the project it belongs to, then a 3-digit number identifying the drawing itself (eg 010 is always for 415v three-phase circuit schematics, while 001 is always the main HV single-line diagram, etc). This way anyone within the plant who needs to review drawings can easily identify the job and what the drawing is of quickly.
While you say that the WDP takes care of it all, it can be controlled easily to reflect any amount of meaning you want out of your drawing names. This can be done in three ways: 1 - when you create the drawing using the project manager in ACE, you specify the drawing name and the location; 2 - when drawings are already within the project manager, you can simply right-click on the drawings you want to change the name of and select "Rename", then refresh the project manager window; or 3 - rename the drawings using windows explorer, then open the WDP file in the text editor and change the file names there as well.
All three work well, but being careful about names when you create the drawing is always going to make things easier. If you are pinching drawings from other jobs and editing them, then it might be better to copy the drawing and rename in windows explorer before adding them to the project manager.