Suggestion: Preallocated file open

[SpriggsySpriggs]

For the ones who truly need this function (whether because they're dealing with ridiculous text files of inordinate sizes or wanting to save a video), couldn't they also just do a check for available drive space on the destination drive before writing the file in the meantime? Seems like there would be no need to "preallocate" anything if one would just check that they're not trying to fit fifty pounds of flour in a five pound bag. Also, modern Windows automatically schedules defrag tasks for weekly runs.