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I know that we can use several uv and texture sets per model in the new version. But what I mean is the possibility to have 2 different uv sets for the same polygons that blend into each other (like I would do with a shader and several blending texture stages). First texture / uv set contains colors. The same uv set uses another texture with normalmap. But a third differs. It uses a new uv-set without tiling to paint shadows over all. That should happen after the shaders and material setup. It should simply be blended on top of the material.
I've asked for this features multiple times over the last year or so. The new faster renderer is really nice, but the ability to do lighting this way would be even nicer. It's the main thing i'm missing right now, and if it's not around, it'll force me to use BSP for a my indoor racetracks. Been putting off the indoor tracks dev until last so this could be possibly implemented in the .mdl format before I start on them. This isn't possible with shaders either. 
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