Normal, Height and Specular Maps generation inside ue4.

I’m using mindtex to generate all my maps (normal, specular, ao, bump, etc), this take me a lot of time to create the best maps for certain textures because i need to reimport all the maps in unreal and change my materials and see if it will look good. My suggestion is to make a material node to auto generate these maps based on the diffuse texture with some parameters like mindtex or crazybump.