I love the design: It's a little bit unconventional after several of Florian Wieder's designs. The rotating sun and the waterfall feature offers a lot of unique stagings for 41 songs and seems more versatile than Rotterdam '21 or Kyiv '17 IMO. If I have to be nitpicky, I wonder why the island needs to have hexagons on it.
However, I'm also concerned about how ambitious the design looks.
1. The bridges seem pretty hazardous since it slopes down while curving. Will they install railings on them?
2. The strength of the overall structure, since the prototype's floor material looks so thin. Even if they're not LED, it's still concerning.
3. The waterfall. I hope they can find a way to make the water circulate. The designers look like they've considered this on the design, however.