I agree! Definitely needs improvement, that's for sure.
But to become 'outraged' over the temporary removal is going a little overboard, pardon the pun. Is it not better to temporarily remove them so they're not damaged and then replace them than it is to leave them where they may be damaged? To me, their plans show a great deal of respect and concern for the memorial.
Besides, if they're building around the memorial, I would think it would enhance the memorial and bring it more to the attention of the tens of thousands of visitors to the area, which is a very good thing.