This might get long, so hang with me.
I think the IP debate has been largely confusing and it really just boils down to semantics.
Intellectual Property is defined as "a work or invention that is the result of creativity, such as a manuscript or a design, to which one has rights and for which one may apply for a patent, copyright, trademark, etc."
By this definition Disneyland itself is an IP. I'd even go so far as to say that nothing exists in Disneyland that isn't...
Now, I think where people are getting crossed wires is when someone flatly says, "I wish Disney would stop adding IP to the parks"...etc. (I admit, I was guilty of that in the past). But that doesn't really makes sense, because that logically means that they don't want ANYTHING added to the park. So, let's clear out that line of thinking.
What's REALLY being discussed in matters of IP is the merits of Disney adding something original vs pre-existing. The problem some of us have is that it seems like Disney is only interested in adding pre-existing IP to its parks and has put the kaibosh on creating anything original.
Original IPs like Haunted Mansion, Pirates, ALL of Epcot Center, etc. are what some of us long for when we go to Disney. If we strictly wanted movie-based attractions, we could go to Universal. But frankly, I believe WDI was partially created TO make original IP and they did so amazingly. Current brass at the top seems to have forgotten what WDI is capable of when given blue-sky assignments.
Looking at it another way, let's say WDI is like a bakery. They know they have all the necessary ingredients to make an amazing, original cake, but then in comes management with a box-mix and says, "OK, make this the best it can be".
Bad analogies aside, I truly hope we can all get over the "non-IP Disney" vs the "IP Disney" because by definition, they're the same thing.
There is no such thing as a "non-IP" attraction.