Again, I'd be fine with it if Uni found a way for it to work. I just don't think the WW needs a huge expansion, that's all.

Let me point out that we're talking about a theme park. Absolutely everything in a theme park is, in reality, useless (not that I feel that way, everyone needs a break to have fun

). Nothing is "needed". It's all about the want, the demand as you would call it in the market. If it will make money, you bet a big Potter expansion will happen within the future whether any of us likes it or not. Not that we know for a fact that it's happening (although I'd bet money on it), if you build it, it's been proven, they will come, and IoA can focus on revamping/improving the other islands to balance it out. But I do believe that want another go at Potter before that happens.
Mythos is the #1 theme park resturaunt. I don't think Uni is going to change it or it's menu, which they would need to do if they theme it to the WW. I think they should theme it as a resturaunt seperate froom the islands, that a POE citizen set up. That way, the food and atmosphere won't have to change.
As Tbad already pointed out, it doesn't hold that title anymore. While I love your idea (pretty creative if you ask me :thumbs: ), Universal is willing to retheme it, if, once again, it will make them money. And it's proven that it will.
Maybe a Flourish and Blotts bookstore or a Madam Malkin's robe shop?
Hmm, I like those concepts, but I can't see a lot going in those shops... Flourish and Blotts couldn't sell much, because I think Joe would want to keep it to her books, which leaves it at the series and the two books she wrote for charity... Any products you could see going in there (maybe some more toy monster books of monsters?). Same thing with Madame Malkin's... But, I could see Madame Malkins "partnering" with another, more general store (if there is such a thing in Diagon Alley).