The restoration of the Langford holes is already slowly underway. With Craig Moore in as the superintendent, they've already done some minor tree removal (most notably at the par three fifth). The plan is to continue along slowly with the less expensive works before getting to the idea of green expansion, which would also require some nifty work with the irrigation system as several sprinkler heads are located on green fringes.
For anyone headed up there, you can definitely tell the Langford holes from those done by Gill, although a couple Gill holes (such as #16) are fairly interesting on their own. The original nine holes are currently numbered (in the original sequence) 10, 11, 7, 8, 4, 5, 6, 12, 13.
Jeff is right about the homes occupying an area that Langford had earlier designated for two holes. Despite that loss, over a period of time the original Langfords can be restored and the Gill holes tweaked in a way that could dramatically improve what is already a pretty cool golf course. A few years back, Marquette acquired a copy of Langford's original plans (I believe from Ron Whitten), and it was extremely interesting to see what he'd planned. If you're familiar with the place or stop by, ask to see a copy if you can.
As far as Greywalls goes, I had heard it came through the winter in remarkably good shape and that things are looking better than they ever have. I can't wait to get up there and give it another go myself.