Like I said a page or so back, the park may have 5 new rides that they opened between 2017 and 2020, but it still only has 9 rides total and without some of the shows it's lacking just for what you'd usually expect out of the park. If it were me, and i've said this time and time again, I wouldn't bring Mermaid back at all and would just use this as an excuse to bring a demolition crew to that whole area. With how closed off Animation Courtyard is from the rest of the park, that type of big construction could go on with minimal impact to the rest of the park, too.
The biggest thing right now is the only nighttime entertainment is their projection show - The Wonderful World of Animation - which has very minimal fireworks. That used to be a preshow to their Star Wars Fireworks show AND they used to run Fantasmic in the park as well. Both of them being gone right now is a huge bummer and only makes the park more of a half day park until they can return some of that nighttime entertainment. You'd have thought they'd have wanted to bring back at least the fireworks show if not Fantasmic for the 50th celebration (although with the celebration running for 18 months, i'm sure F! will be back at some point during the 50th). I just hope Fantasmic comes back with an update after all of this downtime. There's really no excuse for them not updating the show with how long it's been down at this point.