I believe you are misunderstanding the purpose of their mod.
Their mod and the tool they made for it, currently allows players to skip Attons conversations in regards to the gender and force alignment of the player in the first game.
Due to the fact that we are talking about Revan & The Exile and two different stories entirely, I don't think there is any plan to try and make both games use the same main character as a few people seem to have suggested / got the idea that it will work this way.
At the moment it just makes it so that the player does not have to discuss Revan with Atton on Peragus, but there are plans to make it so that it effects other things that could be carried over from the first game, such as whether or not certain characters are alive in the second game.