It could be very useful, if on results of var_dump() on the top of block we could see exact FilePath/FileName and Line on which var_dump() was called.
Sometimes by debugging you can leave some unremoved var_dump() methods, and later in large project it is really hard to find where these dumps are called from.

Also if you have multiple dumps it is even more useful, so you know which dump is which.

I attached example file as this is done in other custom debug solution.
Thanks