Nice idea, currently not quite part of the script as the whole Futa thing has to be discovered (i have in mind quite an interesting quest), yet they might come in Free Mode (as the different timeline evolved the world with a bit more variation).
for sure honestly think you should uncap the requirements for the story progress to do stuff in the free mode
This mechanic inspires players to explore the story and find more hidden gems. Yet, i'll consider it ;)
