I never posted before, but I played s4p completely, including basically all major mods, same for this game and I absolutely looove it. Congrats to the dev(s?) especially the new class system is great! That said, I have a few suggestions and decided to get them all out of my system. I separated them into different topics for ease of use.
Here are some small, disconnected suggestions on how to improve the balance of individual things (mostly items):
Dragon bones and leather Great materials, absolutely love them, but wayyy too hard to obtain and too cheap (in gold). I suggest making them easier to get (in dungeons and maybe settlements) and increasing the price (in gold).
Blue moss For someone who loves crafting potions (like me) the supply of blue moss is simply too low. Especially when compared to the supply of salvia. Generally speaking, I would suggest a more reliable way to obtain it, at such a low price there really isn’t any reason against it.
Ink base While there is nothing wrong per se with this item, I’d love a way to obtain more of it quicker, like being able to craft it with very expensive materials (adamantine, dragon materials, etc) or obtain more of it as loot in dungeons.
Adamantine Adamantine is made from mithril (which costs 75 gold) and dragon bone (which costs 100 gold) in a level three alchemy lab and with lots of effort. How can it be worth only 100 gold when its materials already cost almost twice that? Also, it’s often a worse choice than dragon bone for crafting items, making it questionable to use the dragon bones to craft it in the first place. And finally, its actually easier to get adamantine than to get dragon bones (in dungeons and because dragon bones are only sold for insane, but justified 500 points by the fighters)! I suggest significantly buffing the properties of adamantine, at least doubling its price (200 gold) and making it harder or even impossible to get in dungeons. Alternatively, removing the option to craft it would be a possibility, since then it’s not really an upgrade from dragon bone, but just another resource.
Growth This may be intentional, but I find it extremely annoying that characters with good growth values are so rare. Especially since slaves you obtain early in the game are always better (more time to gain exp, sp, and loyalty), it’s difficult for slaves obtained later to catch up. This disincentivises players to catch new slaves all throughout their run and steals a lot of the fun of managing an ever-growing harem of sorts.
Master staff The master staff is supposed to be an upgrade from the normal staff, but it really isn’t (or at least not as much) because it requires two hands instead of one, meaning you can’t hold a shield or magic book at the same time. I suggest the master staff should also only require one hand.
More slaves I know this was mentioned already, but I still feel the need to point this out again: 30 slaves simply isn’t enough. In a quite similar game (free cities) I managed over 200! I suggest raising the limit to 50, that’s not an absurd number, but you have a bit more leeway.
Oblivion Potion Put simply, at the moment I cannot see why I would ever use this item since it’s just so bad. Hence, I would either improve it by making it selectable which classes are forgotten and/or give back a portion of the exp used to acquire these classes. Alternatively, a refined oblivion potion with better characteristics could be added.