#3 WWE getting rid of Wobblin Walrus when The Fiend moved to RAW
Bray Wyatt introduced Wobblin Walrus to the Firefly Funhouse after having his Universal title taken from him by Roman Reigns at Payback. However, the character was never seen again. In fact, WWE ditched the idea for The Fiend to work with Roman Reigns altogether and shipped him off to Monday Night RAW, which was probably a good idea.
There is nothing wrong with shifting plans for a character, but WWE did it in a way that took away the continuity of the Firefly Funhouse. Furthermore, it had to be insanely jarring for fans to go from seeing a Paul Heyman parody puppet, to Alexa Bliss joining Wyatt's cult.
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In the end, bringing in Alexa Bliss was probably the better decision, but it really allowed WWE to add a interesting layer to the character. It has also crated a feeling of anything can happen in this storyline and has made fans pay attention in a way they haven't before.