You not only can but definitely should! Customer feedback and ideas are super important for us. To contact us use "contact creator" button. Remember that if we will find your idea really good we can give you our other products for free to thank you!

Yes, addon finds textures using multiple techniques. We've tested many scenarios like hat from varius platforms nd it worked, but remember if some specific scenario is not working, as it can happen because of non-standard situation you an always contact us and we will fix it as fast as possible.

The addon installation guide is in the documentation, there are detailed steps what to do. You can also watch any you tube video on how to install addons, th proces is always almost the same.

Yes, addon updates, even the biggest ones will always be free.