I agree with the general sentiment here. I'm sorry to see this, but am very aware of how generous the program is. The economics were just not there for Hyatt.
Look at the just-announced Marriott promotion They are offering a few options, but the one analagous to FFN allows 1 free night after every 3 nights (rather than 2 stays) for redemption in the lower level hotels (cat 1 to 4) with a max of 2 free nights. Night and day from Hyatt's.
The other huge difference for me is that, with few exceptions, Hyatt welcomes me to hotels as if they appreciate my business. At Marriott (where I am at the top tier - not insignificant at 75 nights/year) I feel like the guy checking in next to me. No breakfast, no internet, no suites.
At the Park Hyatt Paris, where my family and I spent a week at Christmas on NBT free nights, they treated us just as if we had spent the $1800 per night for the suite they gave us. You don't get that at Marriotts.