I'm not sure why you don't care for the villas. A studio is pretty much the same size as a regular hotel room but has a kitchenette (small fridge, sink, microwave and cupboards).
You cannot use points for "regular" WL rooms but can at the DVC part of the resort. The same is true at BW, BC and YC. Staying at the DVC resorts is really where you get the best value, although a quick calculation using pacochran's numbers, GF would "cost" about $6200 in the value of your points (1032 points over 21 nights @ $6 per point)and so would still be a bit less than what you've been paying. However, the same amount of time in VWL studio would cost around $1800 (about 300 points over 21 nights at $6 per point). The point rates for non-DVC resorts change each year just like the rack rates do whereas DVC point values are set. So if your heart is set on staying at GF every time then DVC is probably not for you. As others have said, take the tour and talk to the guides about your vacation habits. They'll be able to give you a good idea if DVC is right for you.
Note that my estimates are representative of my situation and don't take into account any costs for loan interest and so are very conservative.