I also think another reason for the location of Finnegan's Flyer was simply the left side of the park Italy. Festa, Oktoberfest, and Germany all contain more attractions then Scotland, Ireland, Wild Reserve, France, and New France. In more recent years several attractions have opened on this other side of the park in smaller, less predictable spots that require intense clearing of trees. It almost seems like there's a chance this it taking place to attract more guests to this side of the park to help with crowd flow.
2017 - InvadR
2018- Battle for Eire
2019 - Finnegan's Flyer