To think that the existance of more sample assets will draw more people in is a false conclusion.
I'm probably the biggest and best free open source game ready 3D asset producer in the world and I never observed any evidence that it drew significant attention in any way or that anyone significantly made use of it. So I think you are totally wasting your time here, almost everything you produce will be directly for the trash, if you do not make use of it yourself.
Even in the open source or indie game dev scene there is hardly anyone left who could make use of those assets, since in the last years everything has become targeted to small primitive 2D or cheap 3D mobile games. All assets and game engine that target the 2D and mobile market experience a boom right now, if you produce assets or game dev tools targeted to that market, you will become super popular, but if you do serious full 3D game development, there is hardly anyone left who even cares or even has the skill to make use of what you are producing.