The leather changes have been removed,
Is this where there is only one type of leather? If so, It's the only feature I really wanted from this mod...
I assume, though, that you're referring to the Accelerated Module, which merges all leather types into one generic leather type. If so, then yes, I removed the module because it was a lot of work to update it to the new version and, as mentioned, I mostly made this for myself. The official modest mod still supports Accelerated. There's a large warning to avoid Accelerated on the first page, so you probably shouldn't be using it anyways. Masterwork has this feature working well. To be honest, I don't understand the appeal of Accelerated: much of the FPS gain is just turning off temperature and reducing how many items are created. It has a separate goal of reducing the variety of stone, leather, bone, and more, but that has nothing to do with making the game faster.
Might I suggest my Wanderer patch? It might be worth noting that DF Wanderer adds in classes of leather, so that dragon leather (dragonscale) is much stronger than chicken leather, unlike vanilla (where they differ in name only) or Accelerated (where there's no difference at all). This is why I like Wanderer. Taming large or rare beasts to set up a leather industry ought to be rewarding, but Accelerated (and, I assume, Masterwork) remove the only real reward the game offers: seeing "roc leather armour" rather than just "leather armour". Wanderer at least scales the quality of the leather output as a reward, so you'll get better leather.
Yes it's the Accelerated part I'm after.
I'm not at all concerned for FPS gains, I just don't want to have to deal with loads of different leather, and it also makes my life easier, just make "leather armor" instead of "alpaca leather armor" or something like that.