Board Thread:Game Discussion/@comment-30836563-20190221055639/@comment-35072544-20190221074300

When COTA was released, on reddit there were several ideas same as you have (including mine :) ), unfortunately it didn't have much upvotes from other users and later also one of the developers confirmed, that it's unlikely to happen.

"medmondson_rr3: The new track will be used with all the new content going forward as usual, and we have added it to some older series. We add new events to old series sparingly as players have communicated that they don't enjoy recompleting old series."

FYI, COTA was added into the series of F14T.