If you are talking about Mermaid, then no not remotely enough. Adding that back helps a little, but they literally need a ton more to do. And removing MuppetVision, the only notable continuously running show in the park (sorry but the Mickey shorts isn't anything special) makes touring DHS worse.
I actually like the idea of adding Monstropolis. It's a great IP for that park. But it should be build on currently backstage land, not replace anything already open, and contain at least 2 rides + another show/flat ride/playground + M&Gs.
What they've presented and seem to be planning doesn't actually help the park (maybe marginally). But they will spend hundreds of millions of dollars shuffling deckchairs.