So while it may not be a masterpiece, Avengers Campus Paris does it's job well enough simply by fixing the obvious lack of budget the park had to work with when it was being built and changes the former backlot from looking ugly, dated, and barebones into a land that is sleek, cohesive, and transforms at night.
If this was the only thing coming to WDSP, this would be a disappointment, but there's still a Frozen Land (construction underway), Star Wars (possibly only RotR and the village area?), a new lagoon for a nighttime show, another ride out by the lagoon (thought to be a carousel) and an E-ticket still planned for Avengers Campus (according to Martin over on Magic).