AG - I'm not sure. Btw, I shouldn't have said "high rough" because for my point I think just plain old fashioned "rough" suffices. And what I'm not sure about is whether, on a typical golf course, the fairway bunker is to some extent extent analogous to a water hazard.
What I tend to find is that many architects take a short-cut to playability and challenge -- i.e. instead of designing fairway bunkers that are truly hazardous and penal (and then making sure that the smart average golfer has room/options to avoid them), they create fairway bunkers that are shallow enough not to be too much of a penalty, and thus let themselves off the hook in terms of having to design a wide and/or interesting enough hole to be 'playable' for me and 'challenging' for the better golfer. In that context, the fairway rough seems to makes a mockery of even that initial short-cut -- almost ensuring that I'm rarely either in the bunker or in the fairway!
I've made this post to convoluted, AG - but in short: while your analogy may be a good one in theory, in practice I find that, while I'm not a big fan of the banal and forgiving fairway bunker, I'm even less a fan of that hazard (such as it is) being made redudant by rough.
Peter