Sample Multiple Attributes from Nearest Surface

The Sample Nearest Surface node can be quite expensive to compute for large meshes. It would be much faster and significantly more convenient to able to sample multiple attributes at once, using the same interface as the Capture Attribute node.

I'm currently finding myself having to do things like compressing 24 floats into 6 colors, or 12 vectors into 9 colors, just to save the processing time. I even tried compressing them into 4x4 matrices, but the interpolation logic for matrices destroys some of the data when sampling.