I don't know anything abouit 3DGS future ???
For example Unity 4 already has DX11 features, and some great other planned ones ... For Esenthel that's cool they have DX10.

For the coding , i really do'nt find it easy at all compared to script.
But well ... perhaps i'll have to give it another try one day ?

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For animated models, can we import in the engine models from Blender ? or FBX ? without exporting on very old formats like MD2 or MD3 ?