While it would be a great addition to the park, the issue is "where?". USH is kinda screwed due to space issues.
The problem with California is the Earthquake building codes, so fast-tracking anything isn't completely possible. Unless we sacrificed the old TWD ATTRACTION building for something new, resulting in one less house location. A Parisian Courtyard/French St replacement wouldn't be ready until 2026 either. Lower Lot would have to sacrifice soundstages or Mummy/Transformers, which they can't afford to do with the limited rides/attractions/shows as is. Even so, that'd not be ready until 2026/2027 if they were lucky.
We just have to accept the tragedy that is this new addition being delayed.