For one of our clients we have been able to successfully claim that the procedure at hand was too complicated for a UDRP. It concerned the domain name GOOFLY.NL. Plaintiff had involved multiple parties in the procedure, the original trademark owner had gone bankrupt and there was great confusion on whether or not the trademark had been transferred legitimately.
Reason enough to deny the request for transfer simply because the case was too complex. A UDRP procedure seems easy and simple, however, sometimes it is strategically better to choose a different route. In this case a court procedure would have been better.