I added the expansion to the list of desired games on boardgamegeek.com
You may follow the link below, and if you have an account over there, you can give it a thumb.
Also spread the word (and the link) among your gaming friends!
If we get enough thumbs we might be heard
Please upvote this bug to help it gain attraction and show BGA developers we're really interested in getting this Expansion with new leaders and wonders implemented on BGA.