Era of Experts - Expansion Review - Beyond The Base Game

About Inventors of the South Tigris: Era of Experts, from BoardGameGeek:

In Inventors of the South Tigris: Era of Experts, great minds from across the known world continue to make the House of Wisdom their home. It is an age of specialists. Brilliant thinkers and masters of design bring with them new inventions to wow the inhabitants of our great city. For those who wish to leave their mark, the time to create their greatest devices yet, has come. Era of Experts provides 12 unique playable characters to the game. Each character comes with its own special abilities, starting bonuses, and motivations. -description from designer