When you say you are being asked to make new & different, what are we talking about? Do you mean going from using 8-10 oz leather for holsters to making purses or something that requires a thinner leather to start out with? Hard to tell from your initial post, but make sure you are using the right leather for the job.
Also, remember that alcohol dries out the leather, so the more you use, the harder it is eventually going to get. If you want your leather to be soft & pliable, use a leather dressing, such as Pecards, to condition & preserve the leather. I do not know what it is you make, so I am just going off of generalizations, but the important thing is that you preserve the natural oils in the leather, otherwise it is bound to crack eventually. If you are not familiar with Pecards I suggest you google them. They make an excellent product. I have no involvement with them other than as a user of the product, so this is not a shill drumming up business for them.