It is possible in future releases, add two new nodes, blur like a mipmap bias, but work with all nodes and procedural patterns(noises and etc.), and it can be connected anywhere in the nodegraph.
And baking node, for caching procedural node graph to disk in one file, maybe .tx, for more speed up render.
It would be cool, for work with procedural shading with more speed.
Sincerely,
Slava