I feel like an early axe user is what's really missing, instead of in chapter 5. This is especially considering there are many soldiers early on. The chapters aren't so hard that you need it, but it definitely felt weird having 3 sword users, a lance user (cavalier), and then no axe users, especially since usually in the early game you heavily rely on the weapon triangle. Of course Tethes uses axes, but he 1 rounds anyone anyways, and you tend to use unpromoted units early on to give them EXP.
The EXP gain is generous enough that I think you can baby any unit even if you stop using them, so I might give Bastila a go. Unmounted units tend to be cooler than mounted units (even if they are less useful) so I might drop the cavalier.
The difficulty of the chapter when getting the boots makes a lot of sense, you basically need Ry to tank everything so being on two fronts makes that a lot harder - noted, thanks!
I don't remember exactly which chapters were fair/unfair in the economy system, but I think the easiest way to remedy this is just to release the requirements for each chapter. There are definitely a lot of easter eggs in each chapter (visiting villages for promoted units in chapter 10, for example), but knowing turn counts ahead of time will help you plan for those. Then the player can make more tactical decisions, gauging whether they want the Fili shield/chests in exchange for a 5000g loss, for example. I'm sure that in your planning of each chapter, you take easter eggs versus turn count into account, but from a player perspective, since you don't know what the rules are, it doesn't make sense to leave anything on the map. The result feels more like luck than anything else, which never feels good in a strategy RPG. If you've played Sun God's Wrath, which is another hack on this website, they also have fast/slow clear bonuses, but it's stated at the beginning of each chapter exactly what it is, which lets you ease into this new system and plan for it. Also, I did get the note - this long payoff is the kind of thing that people love!
I think I'm fine goldwise, but I wonder if I send you my save file if it's possible to add Kaz and Marsil as recruited units? Only if it's not too much effort - if not I can just retry the chapter now that I know the requirements, but it'd be nice to not have to repeat the chapter.
Thanks! I'll keep updating with any new tidbits as I keep playing the game.