My only complaint about the system currently is that I seem to have found a bug with capturing Lind so I can progress that plotline. I've defeated every single battle on the overview map, even on the highest difficulties, several times over. But, she never appears in the prison like she's supposed to. My current theory is that maybe the sequence I did things in caused a bug? But, I can't recall what the sequence this time around was, so I can't speculate as to what two events may have conflicted.
As far as the overview map, my strongest suggestion would be to scale up quantities and production, that way you aren't trying to keep everything so tight with regards to timescale. For example, we can sell 15 furniture and 25 jewelry to begus, but it takes half a dozen turns to produce that much, making it much less worthwhile, especially with you repeatedly having to check the exports at your port every turn in order to not miss out on those profits. If you increased the scaling of those values, you would be able to adjust things more easily, to achieve a proper equilibrium between not making it tedious but also making it fulfilling.
I'm also having difficulty finding the auto battle function. I have an overabundance of troops to spend for it (I might never have to manually battle again, at this point.) but, I can't locate the option toggle. Wherever it is, it's really obscure, because I've checked everywhere I can think of, from the main options menu, to every single overview map menu. Unless there's a criteria to unlock it, that I'm simply lacking, I can't get it to turn on.
But, I do want to say that it's a cool idea conceptually. I think that, had the game been designed with it as a planned feature from the beginning, it could have been even better. But, personally I have to say that it does feel a bit out of place in the current game style. Considering the limitations of the software you're using, you've done an absolutely phenomenal job making a very unique system and integrating it with the other game elements. But, it definitely feels more like a standalone game, rather than a part of Renryuu ascension. The setting is the only thing the two halves really share. I mean, yeah. The vanguard commanders appear as NPCs in the other half. But, they aren't particularly captivating, and once you make them commanders, they basically have no more role to play in the roleplaying side of things. They really just exist to be vanguards and that's it.