I am always up for the discussion, but if its a "what would I vote right this moment", its no.
When I look at most of the late game buildings proposed, I think teh entire concept of what a late game building is needs to be re-examined. Just adding yield generators and more X is not the answer. We already have PLENTY of that.
I am more in favor of National Wonders that can do specific functions, huge cost scalpel solutions for specific problems or VC. They could even be mutually exclusive, so you choose one amongst a list.
They should change the game in interesting ways and have an immediate impact (I am personally fine at that point if they have 0 ongoing yields, just more inflation we don't need).
And above all else, they should precisely and directly help you win the game, no more, no less. No subtle "this gives you more yield X which will help you do Y which will somewhat help you win". Just flat out "this will move your VC along".