Adam, An excellent point about the drainage and I too agree that soft approaches sucketh!!
A few years ago the Bayhill PGA tournament had the soft approach, firm green conditions and the pros weren't happy, that condition is about the worst "maintenance meld" that can exist, IMHO. But your very astute observation about the effect of the drainage on those types of greens hopefully will illustrate to many players just how difficult it is to produce the ideal maintenance meld and just how fragile the balance between good and poor playability is, A 20 minute tropical downpour can change firm and fast to What the f..., in a heartbeat.
I think technology has narrowed the curve between optimal,acceptable, poor, and silly playing conditions, because the older courses with the really contoured greens,false fronts, ect. are running on the ragged edge speed wise too much of the time so that weather events even small ones like a drop in humidity radically effect playability almost immediatly.