Influences from FFIX

[Orophin]

you can compare mail to materias , but not mails to the crystal tower .
That would be a little weird ,
"so we added chaos shrine for the 1 , crystal tower for the 3 , what for the 9 ?
-Mognet ?"

They're adding Magitek which is from FF6 and it's not a landmark, so what's your point?

To reply to the OP, things they add to the game have to have some kind of purpose, else it's hard to justify the development cost. If the only way to get from point A to point B is to take a cable car then sure that makes sense and they can do it with a little bit of style at the same time.