I gave a shot to acrylic faceplates. The result is nicer that MDF, although the price is higher. I make a proper faceplate for the digitalLFO (which became more than a LFO actually). It also has a name, it is now a proper entity !
Next time, I’ll try to hide the messy wires behind with a plain color acrylic. Although it’s a bit expensive and fragile, it’s a valuable substitute I think. I’m glad with that.