I play Black a few times a month and while I do love the layout, the maintenance of the rough is really hard to ignore when considering the overall product.
There is quite enough length, elevation changes, trees, tall fescue, deep bunkers and even wind to make the course one of the most fair yet challenging courses in the country. But add in the narrow fairways and thick rough and you've removed much of the nuance. Many of those great long par 4's have fairways that are unnecessarily narrow, punishing all but perfect drives, and robbing many of a chance to attack the more interesting challenges.
#15 for example. It doesn't take being offline by much to miss the fairway by an inch on either side and be forced to lay-up. That fairway is very narrow when, since the second shot is already the toughest approach on the course, it should be relatively wide.
The situation is the same on #5, which can be every bit as difficult to hit/hold in two as #15, but requires an even longer, more precise drive. Or #16, where it's hard enough hitting the green from the right side of the fairway, let alone from even further right from that.
They've also buried some of the best bunkers on the course in the rough, like on the left side of #10. There is 10-20 yards of rough between the fairway and the left side bunkers. Remove that rough; subsequently bringing those glorious bunkers more into play by tempting players to aim there in order to cut off a little distance to the hole.
There's also a situation like #6, where I believe there used to be a lot more fairway on the right, short of the bunker. You'd leave yourself a very long, very blind shot to the green, but at least you could attempt it.
I don't think these suggestions necessarily make the course play easier, only the drives. In fact, many of them actually bring more trouble into play and ask the golfer do a lot more thinking about their abilities. The challenge is there regardless of the rough, but it's a shame that many who come to play it will walk away thinking challenging=thick rough/narrow fairways.
That all said, I'll be out there again on Saturday.