When I was as the same stage as you, I initially bought a box blade because the project I needed to work on was to dig some sediment out of a dried up pond. I use the box blade for several things including
ballast, but the main thing I use it for is working on the gravel drive way. For pot hole repair, you really need to put the scarficers down and loosen the rock up some and then smooth it back out. If you just pull some rock onto the pot hole, you will soon have the pot hole back again. You can crown the driveway by lowering one side of the box blade and go down one side and back up the other and it will move the rock toward the center of the drive. The key to using it is understanding that if you lenthen the top link it will not dig as much and will tend to smooth it out. Shortening the top link causes it to dig down so you can move more material.
This is where a hydraulic top-link comes in handy.
The first year I had it, I tried using it with the FEL to clear snow. Fortunately we did not get much snow that year as it was not very effective for that. The next summer I found a dealer going out of business who had some rear blades (scrapers) he was getting rid of. I bought one that will angle and tilt. I use it to dig trenches to bury the drain pipe from the down spouts, push the dirt back into the trenches, but mainly to plow snow. This weekend I will probably put it on the back of the tractor an it will stay there all winter.
Unfortunately they are two different tools. Each can somewhat substitute for the other, but not entirely.
Therein lies the dilemma If we got no snow, I wouldn't have bought the rear blade but to each their own.