Nicklaus' furrors is a perfect idea and the hand rakes for play could have the same furrows.
If you know what is going to happen when your ball is in a bunker, it ceases to be a hazard - regardless of how difficult the guaranteed result may be.
While I agree with you about the lack of randomness of such a setup, your statement is actually ludicrous...
Does a 10 foot deep water hazrad cease to be a hazard because it's 10 feet deep and we know what's going to happen?
We actually agree in spirit, but trust me a furrowed bunker would be hazardous-it would make short sided spinning bunker shots far more difficult-We might not agrree that's more predictable-but it still makes short siding the ball more hazardous.
Lack of predictability may be our preference for hazards, but it's not the definition of a hazard.
I'm very ok with less bunker maintenance and randomness-and certainly way less bunkers in general with the ones left hazardous, but I used to laugh at how crazy the caddies got from owner pressure at a certain course about the way the bunkers were "kicked in"(or not "kicked in") properly.
If you want them kicked in perfectly, give us a rake.
Or let's just have at it and only rake as needed to keep undergrowth out.
I guess I'm not OK with perfectly raked bunkers for the first group out for competitive golf, and conditions steadily detiorating throughout the day due to a wanna be Pine Valley policy-especally in a one day qualifier.
Don't rake them for a week before the event-I'm ok with that.