Indeed. Ill always argue that the IP doesn't matter if done correctly. But non of them are worthy of an attraction in a WDW park. Unless you want another Ellen or Food Rocks.Again, The Twilight Zone is a niche franchise. A fun ride is a fun ride, regardless of what the IP is. Though the right IP, regardless of how "mainstream" it is, can really enhance the attraction.
And, finally, this "niche franchise" has been referenced on Family Guy, Robot Chicken, The Late Late Show, Marvel's Agents of SHIELD, The Today Show, The Big Bang Theory (currently the number one comedy program in America) and more.
How do I say this.... theres quite a bit more to the UK than a TV programme.