While we also own at BLT, VWL and BWV, we LOVE VGC. I do think the high cost is because DL is built on such a tiny plot of land so there is just such limited space to build anything on, so real estate comes at a premium price. Plus it is considered the flagship of DL (rightly so). You might keep in mind that while it's a lot of points per night, most trips to DL are not a week in length (roughly) like they are at WDW. There are just 2 parks and no water parks, boating activities, bike rentals, DisneyQuest, etc. It's a condensed WDW trip--I feel you can do almost as much but only need to stay for half the time so in the end it costs about the same!!!
In all honesty, it is so easy to get around DL at VGC. I timed the walk from the ride 'Soarin' to my room (forgot something) and it took me literally 4 minutes to get there.
It's definitely worth checking out--you could stay just a few nights at DL then spend a few nights at the beach or elsewhere in SoCal. That's what we tend to do.