Thanks for all of the feedback guys. I’ve since made changes to the set.
Amaja nui and the Bridge have been removed. A stud launcher representing panrahk’s fragmentation bombs is placed on the head structure and can also be folded down out of sight. The head structure has also also been changed and the metal hatch leading to Mangaia can easily be made open or closed by pulling out the center, which is held up by a stand underneath.
These changes lead the peice count of the set to decrease to 679 bricks and the price to decrease to $67.99 USD