Anyone saying they should use the design of Marvel Superhero Island to represent the MCU needs to get out of the drum circle. I can't shake my head any more dramatic than I'm doing right now.... I just can't.....
The MCU is to take place in the real world, not in a comic book world. Earth 616 is our same world, and the MCU is what people are eating up. Not the comics (unfortunate but true).
Sure, I believe Pym's Test Kitchen is a bit much. I'm getting "Honey I Shrunk the Kids" vibes here and seems a bit over the top. But so was the movie, which stood out as the comical, punny movie in the MCU.
But the last thing I would want to see is a Marvel Superhero Island at DCA, or some comic book, cartoon land. The real draw is obviously the MCU, its characters and worlds. Let's at least start there.