The new Elektron cables are very nice, but they don’t come in USB Mini B, so I couldn’t use one with my grid except with an adapter. And I do think they’re not really the right aesthetic for the grid…they are definitely designed with the black and red palette of the recent Elektron boxes in mind.
I just use white Monoprice cables with my grid. Cheap, perfectly functional, good quality, and the white looks good with aluminum.
I’m considering getting a couple of colored standard-size cables for use with the Eurorack modules, though, just to make them easier to pick out in the tangle of patch cables.
It does seem likely that if Monome made some custom cables, especially with nice touches like the braided cloth cover, they would sell well (and at a high margin). If ever that were to become a reality, I suspect the “Monome way” would be to do it for reasons beyond mere monetary gain - something that enhances usability would be their style.
Perhaps color-coded cables themed for the Euro modules? Meadowphysics green, White Whale white, Earthsea blue, Teletype phosphor yellow…