I have not yet - still looking for a used one with around me. Very good find with the Rhino 3505 - see used prices as low as $600.
Twenty years ago, the type of project that you are wanting to do was very commonly done with 30 hp tractors. ALL YOU NEED IS THE RIGHT 3PT IMPLEMENT.
At one time, every USA implement company made an affordable manually adjusted 3pt six foot back blade that worked nearly as well as a road grader. IT DID JUST WHAT YOU WANT.
We have one, and I still have an old spread sheet showing half a dozen companies that made their own version. Although these have mostly been discontinued in today's cheapie US implement market, a used one would be just exactly what you want for that muddy long driveway.
In fact, since I have one I know it well. No, unfortunately not for sale - but a used one would be just as good. An example is a Land Pride RB3572 (discontinued, of course)
Then RB3572 came with manually adjustable tilt, angle, offset, reversing, end plates caps, stand, trailing wheel, and skid shoes. Every part well built. Well matched to your B3200.
Price in 2002 was just over 2K. Used ones are now about that price today.
It will cut, smooth, ditch, and berm. Does mud & gravel. Has optional rake.
Here's all the info on one typical model. There are others.
It does need to have all those adjustments, and most of the optional parts to really work well. The end plates/caps are what makes it work like a box blade. The tilt+offset does the ditch & berm.
Then trailing wheel keeps it all honest.
rScotty