Thanks for the info in this thread. I am contemplating booking Signature via the Chase LHR Collection. The small print says the resort credit is good at Signature and MGM outlets (certain restrictions apply). But it does not list the restrictions.
I've stayed at Signature and like it enough for what it is. But if I have to use that 100 at Delights, I''ll take a pass. It's okay. But agree with the OP that it's nothing special.