Hey, your mod has a lot of potential. Good luck finding coders to help with your project :D
One suggestion I’d like to make is to replace the assets for the second set of shirts to new ones, because they’re all exactly the same as the first set (The only difference is that the first two assets in the category have that line in the middle, but that doesn't really explain why they're different from the ones below, since that line is the second color... I hope that makes sense).