I actually have a Kallax unit in this room right now, it's my audio/record storage.
The Kallax/Limon combo would actually be a great idea, however, I don't think it suits the room layout. I'd need to have the desk jutting out across the room, rather than against a wall.
Which would show the cable mess at the back of the desk, and be a bit weird with my monitor stand and monitors I think.
Really appreciate the suggestion though. The Ikea style is more what I'm after. I'm so Fight Club. 😁
The lack of cable management is a serious oversight by Ikea IMO. In our case we just chose to tolerate the ugliness as the overall utility and value of the Kallax/Limon combo was just unbeatable. Good luck with your search :)
Ikea Signum is ok for cable management although you still need 3rd party grommets. Not sure if they are available in NZ, we have one onmy wifes desk.