Following Gsagostinho's endorsement of pd-l2ork, I just installed it (a few struggles along the way - anyone can let me know if they want the gory details) and, so far, I agree! Mostly, thank heavens for curved cables.
However, one abstraction I'd previously made doesn't seem to work. It's a 4x4 matrix patcher. The issue is not with functionality, but graphics. In order to be pretty, I'm using a canvas on top of each of the toggles; this canvas switches color between red and green, obscuring the boring toggle underneath.
But, with L2Ork, it seems that the canvas blocks the use of my mouse! I can't click on the hidden toggle underneath!
I can easily take out the canvas aspect, of course. But it's so pretty!
Here is the patch, if anyone wants to check it out. It's two abstractions - [4x4] calls sixteen instances of [o].