I have played a fair bit at Hershey Links, formerly Wren Dale, and generally think it's a good course. With a few foot bridges (I'm thinking of some along the line of #8 at Lancaster) across the rather deep and steep valley/gorge the course would be very walkable. Unfortunately there currently are a decent number of very steep down and ups to get to the other side that make it a difficult walk.
Architecturally, it has a lot of shaping that is pretty cool looking, but much of it does not appear be natural looking (a good example of this is the green on the par 5 16th shown in Joe Bausch's photo thread). The fairways are wide, but the gunch/fescue separating them is very severe in season and pretty much results in a lost ball after tromping around the stuff. There are also cuts of gunch that get pretty close to the fairways and greens and really leave no recovery assuming you can even find your ball. Saying this, there are many good shots that are asked of and if the course was kept firmer and with less grass it has enough going for it to be very fun.
The greens are challenging and with interest, especially if you end up with a lot of longer putts that have to go across the ridges that separate the different parts of the greens.
Playing the course, I find that my scores tend to cluster either above or below my handicap. It all depends an where the misses end up, if I can find them I'll score well, if they end up in the gunch my score blows up. This disparity of outcome is also true around the greens, there are some very severe spots around the greens given the slopes and how deep the primary rough tends to be kept.
Summing it up, I think the course has the following generalized features:
Wide fairways but with penal outcomes if you miss them by any meaningful amount (this includes the gunch as well as deep and well placed bunkers).
Greens that are large with fairly well defined areas separating pin placements that have enough slope and borrows to have interest.
Green surrounds that while not natural looking have good architectural features that would allow for an interesting ground game (assuming conditions are firm enough). Furthermore, the green surrounds can be very challenging given some of the severity of some of the slopes and the depth of the bunkers.
Of the three courses at Hershey, the Links is a fairly distant third in my book due primarily to my bias to parkland layouts that more readily allow for recovery shots. If they eased off on the fescue and kept the course firmer and with less grass (basically similar to what I remember Wren Dale playing like) I would certainly play it more frequently. I understand that Philly Cricket made this type of maintenance revision on the Militia Hill course. All in all the architecture is good and the bones are definitely there for good golf. The visuals will never be minimalist/naturalist or golden age, but the golf that's asked for is good.