I tried to ring an rabbit with AccuRIG 2.1.0 is good and simple, but the result was wrong for me. Maybe you want to have a good target in marketing . Then is more good for most users to have a good price with many features. I see you add some motions and If I make a sum with all of these, then is expensive. Is more good for you to add works accounts ... they will work for you and will upload many rigged models and ideas. You can create contests , giveaway, copyrights based on your software or accounts works. Some models will be paid , or included into your software , example : rigged snake models with many vertices, many textures, many animations can be done by any user , and your team will have more team the user will received a value or price , copyright e.t.c. into your area and will be see on community. You can update your software with addons for Blender 3D, Godot , Maya etc because users account to use these products. You can share some basic SDK maybe some user will want to build these addons and send to you. You can vote the upload , send an simple notice , not hardware uses , the upload will be parsed easy by one person into range of time and will have a lot of new models. Hope this ideas will help you.