What specifically did you not like about the Wish?
I encourage you to Google Disney Wish reviews and look on them, plus reviews on this website. It's pretty well documented. You will see a lot of rage about the buttons on the elevators but that has been fixed.
For me:
The ship is lacking in any large Open spaces. The only space really is the atrium and I missed the classic ocean liner look that is on the interior of the first four ships. Here instead they tried to make it look like a princess castle in the atrium and the rest of the interior just varies, often depending on what bars nearby .
It's okay but I considered the interior design made to look like classic ocean liner that the Magic the Wonder the Dream and Fantasy to be a signature look of the cruise line so I definitely missed it on the Wish.
The pools, while numerous, are wading swimming pools not swimming pools, Even the adult pool. A little bit too shallow to stand in and a little bit too deep to actually sit in. What's the point of an Infinity edge pool when for me, The average 5'7 person, if I stand I tower above the water line and if I sit The water is too high up on my body.
There is no open deck on the ship where you can just walk around the entire ship.
The elevators are Long and deep but literally only two persons wide. So if you're in the back of the elevator everybody has to get out for you to get off on your floor. Additionally not all the elevators go to all the floors. So sometimes this results in you transferring elevators... Go up to the 11th floor cuz that's as high as it will go but you're trying to go to 13 so now you have to get off and hit "up" again to wait for an elevator that will go up to 13. Does it sound complex, it is.
The shows are lacking. They have a short show with Goofy that's cute and all of about 25 minutes. Only two main production shows, Aladdin which is okay but has been over done by Disney (DCA, Fantasy, Broadway....) and the Mermaid show which within the fleet is exclusive to the Wish but also pretty bad.
Bars or lounges are spread across the ship. This can be a pro or a con. Many people miss having an exclusive area however I actually enjoyed this part of the Wish. I liked being able to bar crawl all over the ship. Having said that I wasn't particularly impressed with the bars themselves. Star wars bar was basically Skyline from the Dream or Fantasy with a slight Star wars themeing.
Rotational dining. Marvel restaurant comes across as very utilitarian. Your mileage will vary on the Arendelle restaurant. 1923 seems to be a favorite but the tables are so close to each other that you really can't get up and leave without interrupting another table. Which is doable but also awkward.
If you read the reviews I will share with you the wishes better than its reviews. It's not that bad. The problem is That it is a ship that is " not that bad" in a fleet of ships that are quite excellent.