I think it looks really cool, especially seen as it was made in blender. I’m not a big fan of the spheres around the seating sphere but that’s just me lol. Great work!
I would say maybe make a small interior like some UFOs do have but judging by the model’s size I assume that’s not possible.
If you’re any good at scripting you could make it so there’s a working beam that can pull the player into the UFO and maybe add seats that’re just inside of the model itself as if they’d been captured inside the UFO!
Maybe just one large sphere on the top would be more suitable for the build, rather than it being surrounded by smaller ones. That way you may have space for more seats and maybe a small interior.