Something like this...? (crude photoshopped pic attached)
Every time someone mentions poor cable management, this is what crops up in my head; a second I/O module option with rear-facing connectors. Seems like a 'no-brainer' to me.
Yes please!
Except cables pointing out the back at approximately a 45 degree angle on the dumb side is the best solution and allows for easier operation options and less cable snags and breaks.