After having one on my older garden tractor for years, it's proven nothing beats the mid-mount grader blade for driveway maintenance. 40 years ago, when tractors where made to be universally useful, they came with many more attachment options than they do today, true grader blades among them.
That said, the one "downfall" of the old tractor's grader blade was it's lack of down force, usually overcome by simply standing on the blade. I've been working on a mid-mount grade blade for my BX for a year now, but it's severe lack of capabilities, clearances and universal mountings is making the job difficult. Standing on the blade simply isn't the easy option of years gone by.
Almost makes me think I could whip up something like you have to use until the powered blade is complete.