Definitely not?????? And you know that because?????Which for a current starting player you get the Oracle for free and further so far it seems that you get the Babel and Zeus fairly quickly just by Aiding folks -- curious what other GBs can you quickly get within the Bronze Age?? Definitely not the Hagia Sophia nor any of the other GBs you mention.
Let me give you some advice. With the right friends you can get any GB.
You are approaching this as a starting player. You have absolutely no clue how the game will develop when you move on and you already think you invented the wheel. If that Oracle is so precious, how come you are the only one that noticed? Look at the ranking. No one has a high Oracle. Are they all clueless, or are you?