JSlonis,
Some architects have been known to plant different grasses for fairways and roughs so that the fairway lines can't be easily altered.
I'm not a fan of Blue Grass rough, I think it's too difficult for the general memberships.
I think the trend started with courses preping for big tournaments and the desire for "consistency"
With respect to the bent, one has to view the rough in terms of it's purpose, its function.
I tend to dismiss the need for perfect consistency in rough, as I do for bunkers.
I think local clubs have/had become enamored with deep rough, because that's what's pointed out and promoted at PGA events. Trying to emulate the big boys, clubs become misguided and attempt to make their roughs devilish in nature.
The odd thing about the culture of golf and the culture of clubs in particular is that everyone DOESN'T want their club to be deemed a pushover, or too easy.
I feel just the opposite.
The course should present an ENJOYABLE CHALLENGE for all members.
Rough at 2 to 2.5 inches is plenty.
You're not old enough to remember, but, before their were irrigation heads every X number of paces, roughs used to burn out as the summer progressed, leaving them thin and managable for most golfers, so, they could be at 4 inches or 5 inches late in the season and they weren't overly penal..
Today, with fertilizing and unlimited water, roughs beyond 2.5 inches are beyond the memberships ability.
The rough at Oakmont was brutal.
On the 2007 Highlights last night on the Golf Channel, someone refered to it as sticky, meaning that in addition to its height, it had a velcro like quality making it even more difficult to extract the ball.
If a world class player like Furyk can't get out of it or manage it, how is the average member going to cope with it.
The mimicing of Major venues, for every day play is one of the great absurdities in American Golf.