I completely understand where you're coming from mate, and there's nothing wrong with the features you have added, i love the multiple layering, and i love the normal painting, no issues there.
It's just that the major selling point for me, and i'm sure it was the same for Reliquia too, was the lovely, clean, professional, and intuitive GUI you had.
It was easy to use, and you didn't need to learn how to use it because it was right there in front of you, you just loaded the model, loaded the texture, then adjusted the sliders and bam you had your texture ready to export.
Now you have to add the first diffuse layer, add a picture to it, add the first normal layer, add the filters you want, then make your adjustments, then add the first specular layer, then add each filter you want, not to mention the missing model loader.
Also the circular lighting scroller was really useful, it really helps to check that the normals were bumping right, not sure why that's gone.
It would have been better if you had kept the old GUI and added to it, because to be honest, the current one looks very rough and temporary, and i'm sure it's one of the things the steam crowd will pick up on, they'll see the old videos, like it and buy it, then see the new GUI and jump on the refund wagon.
What i would have done is have two sets of tabs, in the top row have Diffuse, Normal, Specular, Illumination, Paint, then in each tab have tabs for the layers, and in each layer a tick box to turn it on or off, with each tab having the sliders like they were originally instead of having to add each slider manually.
Please don't take any of what i say personally, you are doing a great job with all the features, but it just feels like where the user interface is concerned you've gone from awesome to something thrown together to test with, i'm not trying to put your work down, i just want you to be the best you can so that it will be a success, especially on steam where the user base can be very fickle.
Also, in the new UI, all of the sliders are broken, they don't stop sliding at the end of the slider, you can literally drag them all the way off the right hand side of the screen.
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