Should be editable. I wanted to mix with my mapping instead of mix to it, (saved in the project, presetable etc) so I've made this, it gives you 4slices that you can type pixel size/positions to and a few ways to scale pan around the texture within the slices, its fairly simple if tedious to add more slices, could do with a for each in wire... Also the expand node is used to truncate to less slices, but defaults to always have at least 2.
It started as Tech's Scale Mesh, but then I realised you didn't really need the slices and could do it all in wire, so I guess its slice mapping for avenue as well (cheeky cat!)
Feedback welcome, let me know if it works or needs anything adding.
Cat_Slice_And_Dice.wired