As you travel we will be expanding the Arm the Resistance quest to include more towns, and possibly more item types. Some towns may even ask for more of the same items as the situation changes. I also think the quests will feel better once you are getting rewards, and not just dialog. I want to expand the Traders' Depots to also include messages from the towns, with updates about the situation. People in Slimerise can send messages about how you are doing compared to other groups. At each town the main quest progress bars will be updated with the current stores of the town based on what others have provided, but also what has been used. We are thinking that at a certain point of progress Slimerise will start to distribute some of what it has to help nearby towns as well, so the town's overall stores can also go down, even as you are supplying them.
The main reason for currency is that as you travel further you will be leaving the area inhabited by Slimes and slowly move towards more human inhabited lands, eventually needing to travel through the lands of the invaders. That last area is going to bring plenty of its own challenges, as there is no way a group of Slimes would be able to enter an invader town without standing out. We have ideas for how the Slimes can use magical means to conceal their appearance to enter the towns and learn about what is happening, but interacting there with shops, inns, and taverns, would require using the invader's money. Some interactions might even involve paying bribes, though I suppose special items could work for those. It is certainly going to be a gameplay fun vs realism debate as we flesh out those interactions.
I like the idea of Slimes that can transmute/convert/craft items from others. That may just make an appearance in the game! I've been thinking on a crafting system, and this would be a great way to add it, while sticking with keeping the various Slime clans as a core part of the game. We need to be careful with feature creep, but I have ideas for how this may appear later when we have time to look into it. I'm thinking an alchemist clan that can convert raw resources into others, and a crafter clan that tales resources and makes them into finished items.
We are looking at adding an additional section to the compendium for items with more details on them. Some of the compendium sections will add more details as you play and interact. We will have to see if that works for the items, or if we just give all details to start.