The download link in the OP has been updated again.
Added:
Chapter 5
With one new playable character, perhaps a familiar face and name. 
There have also been some graphic updates, new portraits to replace generics used in previous chapters. The Credits list has been expanded with the new additions from the Repository.
The download link in the OP has been updated again, and now the thread is no longer in the Concepts subforum!
Chapter 6
With the previous chapter being on Merceus’ doorstep, this one is a map of ancient Fort Merceus. Perhaps a few elements of the layout will be familiar, even.
It’s a snap.
With two new recruitable characters (well, technically Indech is only recruitable after beating the chapter, but shhh 
)
Minimug!
I’ve integrated the catball style Modular Minimug Box into the hack. Should be quite helpful for the players out there. As always, credit to the original creators.
Thank you for staying with this thread! There’s not been much discussion, but I’m seeing clicks on the download link growing steadily, so I hope those giving the current demo a try are having a good time! And, again, if you see any issues, or have any comments, I’m willing to hear them out - I am still learning and I appreciate all feedback!
Until next update!
This is such an intriguing project Augenis, I’m sucker for projects that expand in the lore of the canon, so I’m very happy to see it is progressing, I should give it a try myself, but I’m unable currently.
Thank you! 
I’m glad to hear it. I started on it when I realized that there seems to be rather few projects focused on Fodlan, while at the same time simply liking the idea of writing a prequel (always been fascinated by those in my fanfiction days).
Hope you get a chance to try it, I’m always looking forward to feedback!
Oh Fodlan lore!
I’ll stick to it!