So I was experimenting with seeing how far I could go making a functionally rigged model but hand make only half of it, letting the computer generate the other half completely automatically. Mirror mod seemed like the dream tool for this task.
Thing is... now I am at a stage where I need to mass-copy and flip all vertex groups from one side to the other. I know I can just select vertex groups, copy and mirror, one by one, and then rename them to reflect their side, all at once with no problem at all. But what I wanna do is have a mirror image or "virtual" vertex groups, for the virtual other side of the model. Copied, flipped and renamed automatically, all at once, in a non-destructive or virtual way (don't know if it's the best way to put it in words)
As far as I know it should be as easy as toggling the "vertex groups" button in the "Options"section of the Mirror mod. But this option doesn't seem to do anything even when testing the feature on other or new files. How to make it work?