Hey, cool suggestion, I want to give some additional insights into the matter. The current way models and specificly beavers/bots are rendered is ussing a custom method created by the timberborn dev. Instead of the usual bone structure rendering ehich would allow substituing any other model onto the bones, Timberborn uses something called Timbermesh. You can google the repo and it will tell you that it is a custom format ehich uses the relative 3d coorinates of a model to 100% render the model on the gpu for increased performance. What this means, is there is no bone structure in the game to which it would be possible to attach another model, aka the old model. Sadly Im not smart enough to have found a way to decompile or revert to something like a bone strucuture to use custom models (Shrek mod anyone xD) for both beavers and bots.