are u an engineer? (honest question)
Yes but I am but not Civil nor Mechanical Engineer.
But having gone to school with them and my father was a mechanic + my uncle (moms brother) is a Civil engineer + my other uncle (moms cousin) is an architect so i kinda have an eye for these things.
Oh.. and my first major was architecture and its still a passion of mine.
But all that s irrelevant because Common sense will tell you the first is harder to maintain implement.
Dude seriously look at the first structure and see the amount of moving parts that have to move IN SYNC for the dome to open + the area adjacent to it that must remain empty while it open whereas the second one opens up it's top by pushing back each slice individually and done.