I'm rather surprised no one is questioning the idea of an island of gnarly rough in the center of the fairway. I don't see anything wrong with it, but I would have thought someone here would.
I wonder what the reaction would be, both here and amongst typical US golfers, if a new design had a hole like this with that sort of feature.
Perhaps it might be easier for US golfers to get used to the idea of an island of rough in the middle of the fairway, rather than a bunker in the middle of the fairway. Heck, they are mostly OK with trees in the middle of the fairway, so why not see more of this? The only example I can think of off the top of my head is that strip of desert on the back nine par 5 on the TPC course in Scottsdale, though I'd really consider that more of a split fairway than a central hazard because it is so long front to back and you can't carry it (or at least you couldn't when I played there 10+ years ago, I don't remember how far it was so I don't know if that's possible these days)
The reason I like the centerline hazards so much is that it adds so much choice to what would otherwise be a rather formula shortish par 4. Now you have to think about which side you want to play to, or whether you try to go over it or lay short of it. If the hazard is placed correctly the "right" answer changes depending on the conditions of the day and how well you are hitting the ball.
One advantage of using rough instead of a bunker is that it is less threatening to average golfers, while hurting the good players more -- the key to this feature is that it is a hump, so you not only play from the rough you don't get a good lie, and often have a downhill lie which no one wants out of rough to a green fronted by water! You'd just have to watch that you don't make the rough too deep to where it'd slow play.