Tim:
Oh, nothing that would surprise, or that surprised me, even though I'd never played that course before (ie before modernization):
the bunkers were larger and more uniform (than at the other course, and that seemed natural/original/necessary), and with the kind of sand that clearly wasn't from the site itself or from nearby - so different was it in texture and colour from the sand at any other course I play in the area
two bits of awkward routing, that, not surprisingly as I say, I was told were engendered by the creation of two new holes (to replace shorter, narrower ones), one a dog-leg Par 5 with the new retention pond on the left that reminded me of a finishing hole at Bay Hill
fairways that were greener, rough that was more lush
a set of new tee boxes further back (which didn't impinge, actually, since the course was clearly one intended to play from the tees we were playing from, and routed accordingly - so the green to tee walks were good)
I think the cart paths throughout must be new -- they certainly looked new, and I noticed them every hole (unlike the other course where, I'm sure paths were there too, throughout, but I can hardly remember them)
And that said, the overall experience was different too -- the difference on the one hand between parking in the lot and walking with my clubs over my shoulder to the one floor pro-shop-club-house and cafeteria, where I easily found my way beforehand and grabbed an inexpensive burger afterwards, and on the other hand a club drop off area with a young person to take my clubs and a guide needed to navigate the various entrances over two floors and extra money for a nice but very sleek restaurant.
As I say, I do romanticize the past and certainly am mostly having some fun (at my expense too) with the old money-new money cliche; but I do feel more comfortable, when it comes to golf, with simpler things. The fancy things make me feel nervous, and out of place.
At any rate, hope that gives you a picture/background to my thinking.
I have a rare Saturday work day, so am off now.
P